1943 Mercury Dime Errors: Value Guide & Rare Varieties
What is your 1943 Mercury Dime error worth? The FS-501 Repunched Mintmark sold for $14,688; a Steel Planchet error hit $33,600. Expert diagnostics, full value table, and trap warnings. Values as of Jan 2026.
Most 1943 Mercury Dimes are common 90% silver coins worth $2–$4, but the right error can be worth thousands — start with a magnet.
- ⚡ Magnet test first: a magnetic 1943 dime is a rare Wrong Planchet error worth $3,000–$33,600+.
- 🔍 1943-D FS-501 Repunched Mintmark — secondary "D" under loupe — $20 (VF) to $14,688 (MS68+FB).
- 🔍 1943-S FS-501 "Triple S" RPM — stacked S curves under loupe — $30 (AU) to $1,645 (MS67+).
- ✅ Uncirculated coins with Full Bands (FB) on the reverse fasces earn major premiums over standard mint-state values.
⚠️ Shelf-like doubling on dates and letters is almost always worthless Machine Doubling. No major Doubled Die Obverse (DDO) exists for the 1943 Mercury Dime.
1943 Mercury Dime Errors Error Checker
Check your coin for valuable errors and varieties
Values shown are typical retail estimates as of 2026-01.
Silver melt value fluctuates daily with the spot price of silver.
Error coin values vary significantly based on grade, eye appeal, and current market conditions.
Professional authentication (PCGS/NGC) is recommended for high-value varieties, especially wrong planchet errors.
Machine Doubling (flat, shelf-like) is extremely common on wartime 1943 coinage and adds NO numismatic value.
A copper-colored 1943 dime is almost certainly toned silver — weigh it (should be 3.11g) before assuming it is a wrong planchet error.
Reports of a major 1943 Doubled Die Obverse (DDO) dime are typically misattributions from the 1943 Quarter or machine doubling.
In 1943 the U.S. Mint ran its presses around the clock to fund a world war — and that pressure left fingerprints. Alongside hundreds of millions of ordinary silver dimes, wartime chaos produced a handful of 1943 Mercury Dime errors so striking that one sold for $33,600. A magnet, a scale, and a loupe are all that stand between you and knowing which kind you're holding.
1943 Mercury Dime: Specifications & Mintage
The Mercury Dime — officially the Winged Liberty Head Dime, designed by Adolph Weinman — was struck in 90% silver throughout its entire run. In 1943 all three active mints contributed to what was one of the highest combined mintages in the series. No proof coins were made that year.
Obverse (left) shows Liberty with winged cap. Reverse (right) shows the fasces — the bundle of rods where Full Bands are evaluated.
| Specification | Detail |
|---|---|
| Composition | 90% Silver, 10% Copper |
| Weight | 2.50 grams (critical reference for wrong-planchet checks) |
| Diameter | 17.9 mm |
| Silver Content | 0.07234 troy oz |
| Silver Melt Value | ~$2.00–$4.00 (fluctuates daily with silver spot price) |
| Proof Coins | None — no proofs struck in 1943 |
| Mint | Mintage | Circulated Value | Mint State Value |
|---|---|---|---|
| Philadelphia (no mintmark) | 191,710,000 | $2–$4 | $15–$30 |
| Denver (D) | 71,949,000 | $2–$4 | $20–$45 |
| San Francisco (S) | 60,400,000 | $2–$4 | $20–$45 |
ℹ️ Silver Melt Floor
Every 1943 Mercury Dime contains 0.07234 troy oz of silver, so its minimum value always tracks the silver spot price. Even the most worn, common example is worth something — and every example deserves the quick checks below.
For full date-and-mintmark values without errors, see our complete 1943 Mercury Dime value guide.
1943 Mercury Dime Quick Checks: Do You Have a Valuable Error?
Run these four checks in order. Required tools: a strong magnet, a digital scale (0.01 g precision), and a 10× loupe. Always start with the magnet — it is free, takes five seconds, and identifies the single most valuable error in this series.
Magnet test on a 1943 Mercury Dime. A normal silver dime will not be attracted; a steel-planchet error will cling firmly.
Check 1 — Wrong Planchet: Magnet & Scale (All Mints)
Test the entire coin with a strong magnet, then weigh it on a digital scale. A standard 1943 silver dime weighs exactly 2.50 grams and is non-magnetic.
Sticks to magnet? Potential Steel Cent Planchet error (~2.70 g). Non-magnetic but weighs ~3.11 g? Potential Copper Cent Planchet error. Either outcome means a potential jackpot requiring professional authentication.
A standard 1943 Steel Penny (Lincoln portrait, magnetic, extremely common). This check targets the Mercury Dime design on the wrong metal. A worn silver dime may weigh 2.45 g from metal loss — normal. Significant deviations (±0.20 g+) signal a wrong planchet.
Weight is the second test after the magnet. A 0.20 gram deviation from 2.50 g can indicate a steel planchet — worth thousands more.
Check 2 — 1943-D Repunched Mintmark FS-501 (Denver Coins Only)
Reverse of the coin, bottom-left field — the "D" mintmark to the left of the fasces (bundle of rods and an axe). Use a 10× loupe in good light.
A distinct second "D" impression visible as a notch, curve, or shadow protruding from the main mintmark body — described as D/D Southeast or D/Inverted D. The secondary impression must be raised and show clear separation between two distinct punch events.
A mintmark that looks bloated or spread outward smoothly is die erosion, not the FS-501. Flat, shelf-like edges are Machine Doubling. The FS-501 shows crisp, sharp separation between two punch events — not gradual blending.
Check 3 — 1943-S Repunched Mintmark FS-501 (San Francisco Coins Only)
Reverse of the coin, the "S" mintmark to the left of the fasces near the bottom. Use a 10× loupe.
A "Triple S" (S/S/S) repunching — distinct step-like shelves on the upper and lower curves of the mintmark, indicating multiple separate punch impressions shifted to the West and Southwest of the primary S.
A thick but smoothly blended S from die deterioration. Also not the "Trumpet Tail" (FS-511) — that variety has a flared bottom serif as a mintmark style, not a repunching error, and commands a lower premium. The FS-501 shelving must be sharp and step-like.
Check 4 — Machine Doubling on Date / LIBERTY (TRAP — All Mints)
Obverse: the date "1943" and the word "LIBERTY." Doubling here is very common on 1943 coinage.
Nothing — this is a trap. Machine Doubling (MD) has zero numismatic premium. True Hub Doubling (a real DDO) shows split serifs, widened letter bodies, and a raised, rounded secondary image. No major DDO designation exists for the 1943 Mercury Dime.
Machine Doubling appears as a flat, shelf-like step cutting into the side of a letter, making it look thinner rather than wider. It resulted from loose dies vibrating at high-speed wartime press rates — extremely common on 1943 coinage and worth face value only.
1943 Mercury Dime Values & Error Table
Baseline Values by Mint (No Error)
| Mint | Circulated | Mint State (Typical) | MS + Full Bands (FB) |
|---|---|---|---|
| Philadelphia (P — no mark) | $2–$4 | $15–$30 | Significant premium |
| Denver (D) | $2–$4 | $20–$45 | $500+ (FS-501 MS65FB) |
| San Francisco (S) | $2–$4 | $20–$45 | $150–$300+ (FS-501) |
All Verified Errors & Varieties
| Error Type | Designation | Mint | Rarity | Value Range | Auction Record |
|---|---|---|---|---|---|
| 1943-D Repunched Mintmark | FS-501 / RPM-005 | D | Rare | $20–$500+ | $14,688 (MS68+FB) |
| 1943-S Repunched Mintmark | FS-501 / RPM-001 | S | Scarce | $30–$300+ | $1,645 (MS67+) |
| Wrong Planchet — Steel Cent | Off-Metal | P/D/S | Ultra Rare | $3,000–$15,000+ | $33,600 (MS62) |
| Wrong Planchet — Copper Cent | Off-Metal | P/D/S | Unique? | Est. $10,000+ | No verified record |
| Broadstrike | — | All | Uncommon | $15–$50 | — |
| Off-Center Strike (10–20%) | — | All | Uncommon | $30–$100 | — |
| Off-Center Strike (40–60%, date visible) | — | All | Rare | $150–$400+ | — |
| Clipped Planchet — Minor (<5%) | — | All | Common | $10–$25 | — |
| Clipped Planchet — Major (>15%) | — | All | Scarce | $30–$75+ | — |
| Lamination Error | — | All | Common | $5–$20 | — |
| Struck Through (grease/debris) | — | All | Common | $5–$50 | — |
Values are retail estimates as of January 2026. Eye appeal, grade, and Full Bands (FB) designation significantly affect final realized prices. Generic error values are extrapolated from Mercury Dime error market trends; specific 1943 auction records for minor errors are sparse.
1943 Mercury Dime Rare Errors: Detailed Jackpot Guide
Three categories of 1943 Mercury Dime errors can generate serious collector premiums. Here is everything you need to identify, authenticate, and value each one.
1943-D Repunched Mintmark FS-501 (RPM-005)
Normal D mintmark (left) vs. FS-501 variety showing a secondary "D" protruding to the southeast (right).
Origin & Background
In 1943, mintmarks were still hand-punched by a worker called a hubber directly into each individual working die — a process prone to human error. Under wartime production pressure, the Denver Mint was punching thousands of dies at speed. For the FS-501 die, the initial "D" punch was placed significantly out of alignment. Rather than discard the die, the hubber struck a corrective second "D" over the first, leaving a permanent record of both impressions in every coin struck from that die.
How to Identify
- Under 10× magnification, look at the upper loop of the D — a sharp separation line or a clear "shadow D" should be visible to the southeast of the main mintmark body.
- Look for raised, crisp notches on the serif corners of the D. These represent the outline of the displaced first punch.
- The secondary impression must show clear separation — two distinct punch events must be evident, not a gradual spread.
- The reference designation FS-501 / RPM-005 corresponds to listings on VarietyVista's 1943-D RPM page.
False Positives to Avoid
Die erosion creates "bloated" mintmarks that spread outward smoothly without any crisp internal separation line. Machine Doubling produces flat, shelf-like edges that shear the outside of the mintmark rather than creating a raised interior impression. Both are common on 1943 Denver dimes and are worth only silver melt value.
Market Values
- Very Fine (VF): $20–$50
- Extremely Fine (XF): $30–$75
- MS65: $300–$500+
- MS65 Full Bands (FB): $500+ (substantial premium)
- Condition rarity grades (MS67–MS68+ FB): $5,000–$14,688+
Auction Record
Approximately $14,688 for a specimen graded MS68+FB by PCGS (Heritage Auctions). This record illustrates what happens when a significant variety aligns with exceptional condition and Full Bands designation — the two scarcities multiply each other's value.
1943-S Repunched Mintmark FS-501 (RPM-001) — "Triple S"
Normal S mintmark (left) vs. FS-501 "Triple S" showing step-like shelves on both curves (right).
Origin & Background
San Francisco strikes from 1943 are notoriously variable in quality, frequently showing "mushy" details from die spacing issues and inconsistent planchet quality — both products of wartime production shortcuts. The FS-501 variety arose from the same hand-punching process as the Denver RPM: a misaligned first punch was corrected with additional impressions, this time shifted to the West and Southwest, producing the characteristic stacking pattern.
How to Identify
- Under 10× magnification, look for distinct step-like shelves on both the upper and lower curves of the S mintmark.
- The repunching appears to the West and Southwest of the primary S — creating a stacked or tripled appearance in the curves.
- Shelves must be sharp and crisp, not smooth or gradually blended into the main mintmark.
- Reference: VarietyVista 1943-S RPM page and PCGS CoinFacts FS-501 entry.
Distinguishing FS-501 from the "Trumpet Tail" (FS-511)
The 1943-S "Trumpet Tail" (FS-511) is a separate recognized variety where the bottom serif of the S mintmark flares outward like the bell of a trumpet. This is a mintmark style — caused by use of a specific punch design — not a repunching error. The Trumpet Tail is collected by specialists but generally commands a lower premium than the FS-501 RPM. If the bottom of your S simply looks wide or flared but lacks the step-like stacking on the curves, you likely have a Trumpet Tail rather than the FS-501.
Market Values
- About Uncirculated (AU): $30–$50
- MS63–MS64: $75–$150
- MS65: $150–$300+
- MS67+: ~$1,645 (top-pop territory)
Auction Record
Approximately $1,645 for a top-pop MS67+ example (Heritage Auctions). The market ceiling is lower than the Denver RPM, reflecting the variety's relative scarcity versus collector demand at high grades.
1943 Wrong Planchet Errors: Steel & Copper Cent Planchets
Magnetic 1943 dime (steel planchet) showing weaker edge detail and duller surface compared to a normal silver example.
Why 1943 Is Uniquely Vulnerable
1943 is the only year in U.S. history when the cent was made of zinc-coated steel rather than copper — a wartime conservation measure. This introduced a new, magnetic metal into the mint environment. Planchets traveled through the facility in large tote bins, and a steel cent planchet could become stuck in a bin later used for silver dime planchets. If that stray planchet was fed into a press loaded with Mercury Dime dies, the result was a coin bearing the Mercury Dime design but the composition of a wartime penny.
How to Identify — Steel Planchet
- Step 1 — Magnet test: The coin must stick firmly to a strong magnet. This is definitive. A standard silver dime will not respond at all.
- Step 2 — Weigh it: Should be approximately 2.70 grams (steel cent planchet weight) vs. 2.50 g for standard silver.
- Step 3 — Verify the design: Must show the Mercury Dime (Liberty head with winged cap) design — not Lincoln's portrait.
- Surface may appear dull gray/silver rather than the bright white luster of a silver dime; edge detail may be weak because steel is harder than the silver the dies were designed to strike.
How to Identify — Copper Planchet
- Magnet test: Coin should not be magnetic (copper is non-magnetic).
- Weight: Should be approximately 3.11 grams — far above the 2.50 g silver standard.
- Color: Consistent copper throughout — not patchy brown toning over silver. Silver dimes tone naturally; copper planchet errors are copper all the way through.
False Positives to Avoid
The 1943 Steel Penny (Lincoln portrait, very common) is magnetic — do not confuse it with a magnetic Mercury Dime. A silver dime that has been artificially plated or post-mint altered can fool the eye but not the scale. Professional authentication by PCGS or NGC is essential before selling any coin you believe is a wrong planchet — the difference between an authenticated specimen and a clever fake can be tens of thousands of dollars.
Market Values
- Steel planchet, About Uncirculated (AU): $3,000+
- Steel planchet, Mint State: $15,000+
- Steel planchet, MS62: ~$33,600 (auction record)
- Copper planchet (unique or near-unique): Est. $10,000+ — no verified recent auction record exists for this specific combination
Auction Record
Approximately $33,600 for a steel-planchet example graded MS62. This is significantly rarer than the famous 1943 Copper Penny but commands less publicity, meaning savvy collectors occasionally find these at below-market prices.
1943 Mercury Dime Common Traps: Mistakes That Cost Collectors Money
Wartime production conditions created millions of minor surface flaws on 1943 dimes that can look exciting under a loupe. Here are the three most common disappointments — and exactly how to rule them out before spending money on grading fees.
⚠️ Trap 1: Machine Doubling (MD) — The #1 Source of Disappointment
Apparent doubling on the date "1943," the word "LIBERTY," or other obverse lettering. Under a loupe, the characters appear to have a secondary outline or shadow.
The press die was loose or vibrating at high speed (extremely common in 1943 due to wartime production pressure). The die struck the coin and shifted slightly on retraction, shearing or flattening the side of a device.
- The "doubling" appears as a flat, shelf-like step on the side of the letter — it makes the letter look thinner, not wider.
- True Hub Doubling (DDO) makes letters look wider and shows a raised, rounded secondary image with split serifs.
- No major DDO designation (FS-101) exists for the 1943 Mercury Dime — reports of one typically confuse data from the 1943 Washington Quarter, which does have a major DDO.
Value: Silver melt value only. Do not submit for grading.
⚠️ Trap 2: Copper-Colored 1943 Dime — Toning, Not a Copper Error
A 1943 dime with a distinctly yellow, orange, or brownish copper-like color. The fame of the 1943 Copper Penny leads many collectors to assume any copper-colored 1943 coin is similarly rare.
Silver naturally reacts with sulfur compounds in the air, paper album pages, and coin envelopes. The toning progresses from yellow → orange → brown → black over time. A deeply toned silver dime can look convincingly copper-colored.
- Weigh it first. A silver dime weighs 2.50 g. A genuine copper planchet error weighs ~3.11 g. If it weighs 2.50 g, it is toned silver — not copper.
- Test with a magnet. If it sticks, you have a steel planchet error (different and still very valuable). If it doesn't stick and weighs 2.50 g, it's a standard toned dime.
- Copper planchet errors are copper all the way through — not patchy surface toning over a silver base.
Value: Silver melt value only, unless weight test reveals genuine wrong planchet.
A toned silver dime (left) can look copper-colored but weighs 2.50 g. A genuine copper planchet error (right) weighs 3.11 g — always weigh before assuming.
⚠️ Trap 3: The "Phantom" 1943-D DDO (FS-101 Confusion)
Listings or forum posts claiming a major "1943-D DDO FS-101" Mercury Dime exists, sometimes with prices extrapolated from the genuinely valuable 1943 Washington Quarter DDO.
The FS-101 DDO designation for 1943 belongs to the Washington Quarter, not the Mercury Dime. Aggregate coin data sites sometimes misattribute quarter data to dimes. This creates a false impression that a major dime DDO exists.
- Check PCGS CoinFacts and NGC VarietyPlus specifically for Mercury Dime DDOs — no major FS-101 designation exists for this denomination in 1943.
- Any "1943-D DDO" dime listing on an unverified marketplace should be treated as Machine Doubling until proven otherwise by a PCGS or NGC holder that explicitly attributes the variety.
- Minor DDOs may exist in obscure attribution journals, but none command the premiums implied by quarter data.
Value: Silver melt value only unless PCGS/NGC explicitly certifies a specific DDO designation.
Machine Doubling (left) shows a flat, shelf-like step on letter sides. True Hub Doubling (right) shows widened devices with rounded, raised secondary impressions.
1943 Mercury Dime Grading: How Condition Affects Value
Grade — the numerical measure of a coin's preservation — is the single biggest lever on value after variety attribution. A 1943-D FS-501 in VF is worth $30; the same variety in MS68+FB realized $14,688.
Left: Circulated 1943 Mercury Dime with wear on Liberty's hair and cheekbone. Right: MS-65 example with full luster and sharp fasces bands.
Key Grading Points for Mercury Dimes
- Obverse wear check: First wear appears on Liberty's hair above the ear and on her cheekbone. A coin with any rubbing in these areas is circulated.
- Full Bands (FB): The fasces on the reverse features two horizontal bands separating the sticks. When fully struck, these bands show a complete separation with no merging at the center. Full Bands designation adds a significant premium — especially important on 1943 coins because wartime planchets and overworked dies frequently produced weak central strikes.
- Surface preservation: Mint State grades (MS60–MS70) measure luster, strike, and the number/severity of contact marks. A coin with full luster but multiple bag marks may grade MS62–MS63 rather than MS65+.
Full Bands (FB) require complete separation at the center of both horizontal bands on the fasces. Incomplete separation (right) disqualifies the FB designation.
For varieties and wrong-planchet errors, submit only coins that are genuinely high-grade (likely Mint State) or magnetic/overweight. The cost of grading ($30–$50+ per coin) is not justified for circulated examples of common varieties.
1943 Mercury Dime Authentication: When & How to Certify
When to Submit for Professional Grading
Professional grading (encapsulation by PCGS or NGC) adds credibility and often unlocks full market value — but it costs money and time. Submit only when the expected return clearly exceeds the cost.
✅ Submit If Your Coin:
- Is magnetic — any magnetic 1943 dime is a potential $3,000–$33,600+ error and requires authentication before selling.
- Weighs approximately 2.70 g (steel planchet) or 3.11 g (copper planchet).
- Shows the clear FS-501 RPM (D/D Southeast notch or Triple S shelving) in a high-grade Mint State example.
- Is a Mint State coin with possible Full Bands and minimal surface marks (MS66/67 potential).
⛔ Do NOT Submit If:
- The coin has flat, shelf-like doubling (Machine Doubling only).
- It is circulated and shows no RPM attribution — silver melt value does not justify grading fees.
- It has a minor clip or lamination error worth less than the grading cost ($30–$50+).
- You have a "Trumpet Tail" (FS-511) S variety in circulated condition.
Which Service to Use
Both PCGS and NGC are the top-tier grading services accepted by major dealers and auction houses. For variety attribution (FS-501 RPM designation), verify that the service you choose explicitly recognizes the variety — PCGS CoinFacts lists the 1943-S FS-501 and the 1943-D RPM-005. NGC VarietyPlus is another reference. For wrong-planchet errors, either service will authenticate; expect them to test composition directly.
Do not clean your coin before submitting. Cleaning — even with a soft cloth — permanently damages surfaces, reduces the grade, and can drop value by 50–90%. A cleaned coin is graded "Details" rather than a full numeric grade.
Dealer referral information is not available in the current data. Contact PCGS or NGC directly for authorized dealer referrals in your region.
1943 Mercury Dime Errors: Frequently Asked Questions
Why is the 1943 Mercury Dime more interesting for errors than other years?
1943 was an extraordinary year for U.S. coinage because of wartime production pressures. The Mint operated at maximum output, running presses at speeds that increased die wear and mechanical doubling. More importantly, the simultaneous production of zinc-coated steel cents introduced a magnetic planchet into mint bins, creating the potential for cross-contamination — the source of the rare and extremely valuable Wrong Planchet errors unique to this year.
What is Full Bands (FB) and why does it matter so much?
The fasces on the Mercury Dime reverse features two horizontal bands crossing the bundle of rods. A Full Bands (FB) coin shows complete, uninterrupted separation at the center of both bands — meaning the dies struck hard enough and the planchet was good enough to bring up every detail. Wartime planchets and overworked dies often produced weak central strikes, making true FB coins scarce relative to the total mintage. On variety coins like the 1943-D FS-501, the FB designation can multiply value many times over — compare the $50 VF price to the $14,688 MS68+FB auction record.
Is there a real Doubled Die Obverse (DDO) for the 1943 Mercury Dime?
No major DDO with a significant premium exists for the 1943 Mercury Dime. The well-known FS-101 DDO for 1943 belongs to the Washington Quarter, not the dime. Many aggregate coin information sites conflate data for the two denominations, creating a false impression of a valuable 1943 dime DDO. Virtually all "doubling" seen on 1943 Mercury Dimes under a loupe is Machine Doubling — flat, shelf-like, and worth nothing extra. Be extremely skeptical of any unverified listing claiming otherwise.
What tools do I actually need to check my 1943 dime?
Three tools cover every meaningful check: (1) a strong magnet for the wrong-planchet test — no magnet, no meaningful check on the most valuable error possible; (2) a digital scale accurate to 0.01 grams to verify planchet identity by weight; (3) a 10× loupe (magnifying glass) for mintmark examination. A 20× loupe is useful for finer RPM work but not strictly necessary for initial identification.
How do I tell Machine Doubling from a real hub doubled die?
Look at what the "doubling" does to the letter size. Machine Doubling (MD) creates a flat, shelf-like step on the side of a letter — the letter appears thinner because material has been sheared away. True Hub Doubling (DDO) creates a widened letter body with a rounded, raised secondary image — the letter appears thicker and shows split serifs. If it looks flat and thin, it's MD and worth zero extra. If it looks doubled with rounded raised contours, investigate further.
My coin is brown/copper-colored. Is it a copper wrong-planchet error?
Almost certainly not. Silver dimes naturally tone to yellow, orange, brown, and eventually black when exposed to sulfur in the air, paper envelopes, or coin albums. The test is weight: a silver dime weighs 2.50 grams; a genuine copper planchet error weighs approximately 3.11 grams. If your coin weighs 2.50 g, it is toned silver — regardless of color. Only investigate further if the weight test shows a significant deviation above 2.50 g.
What is the Trumpet Tail variety and is it valuable?
The 1943-S "Trumpet Tail" (FS-511) refers to a specific mintmark punch style where the bottom serif of the S flares outward like the bell of a trumpet. It is a recognized variety collected by Mercury Dime specialists, but it is a mintmark style — not a repunching error. It generally commands a lower premium than the FS-501 RPM. A Trumpet Tail in circulated condition typically does not justify the cost of professional grading, and you should not confuse it with the more valuable FS-501 Triple S repunching.
Should I clean my 1943 Mercury Dime before submitting it?
Never clean a coin you intend to grade or sell. Cleaning — even with a soft cloth, water, or "coin dip" products — permanently scratches microscopic surfaces, destroys original luster, and earns a "Details — Cleaned" designation from any grading service. This can reduce value by 50–90% compared to a naturally preserved example. Leave the coin exactly as you found it and let a professional grader assess it.
1943 Mercury Dime Error Research: Sources & Methodology
All facts, prices, diagnostics, and attribution data in this guide are sourced from primary numismatic references. Values reflect market conditions as of January 2026. eBay listings and unverified forum posts were excluded.
- PCGS CoinFacts — 1943-D Mercury Dime FB (pricing and population data)
- PCGS CoinFacts — 1943-S RPM FS-501 (variety listing and auction records)
- VarietyVista — 1943-D RPM Diagnostics (attribution and identification)
- VarietyVista — 1943-S RPM Diagnostics (attribution and identification)
- NGC Coin Explorer — 1943 Mercury Dime MS (census and population)
- Mint Error News Issue 74 (wrong planchet error documentation)
- NGC — Double Dies vs. Machine Doubling (diagnostic methodology)
Silver melt values fluctuate daily. Auction records are point-in-time realizations and do not guarantee future prices. Professional authentication is recommended for all high-value error attributions.
A note on images: To help illustrate coin diagnostics and rare varieties — especially complex errors that are difficult to describe in text alone — this guide uses AI-generated images. All written values, diagnostics, and variety attributions have been manually reviewed against the cited sources above. While our editorial team works to ensure every image is accurate and helpful, AI-generated illustrations may occasionally misrepresent fine details. If you spot any discrepancy between an image and its written description, please contact us or leave a comment below — we review all feedback and correct errors promptly. Numismatic knowledge is a community effort, and your input helps us build a more accurate resource for everyone.
