The 1943-S Mercury dime “trumpet tail” refers to a small raised metal feature on certain 1943-S dimes that looks like a tiny horn or protruding lip near the wing or the fasces, caused by die damage rather than post-strike alteration.
This article shows exactly where to look, how to photograph and verify the mark, why it forms, how rare genuine examples are, and what to do if you buy, sell, or submit one for grading.
Where to inspect the coin: exact locations and visual cues
Check the obverse in the upper-right wing area of Liberty’s cap and the adjacent hair feathers; die chips there appear as a raised lump or crescent of metal that follows the feather ridges.
Also inspect the reverse along the lower portion of the fasces and the adjacent field toward the rim; a trumpet-like die break on the reverse shows as a tight, raised projection with a defined edge and visible metal flow away from the hub.
Look for a raised mass with a clear start and end, a sharper leading edge, and a smooth taper where metal piled up; random gouges, scratches, or surface knocks lack directional metal flow and often cut into the surface rather than build it up.
Photo and magnification tips for clear identification
Use oblique lighting at a low angle to cast shadows across raised edges; that lighting reveals whether the mark is a true die chip or just surface damage.
Carry a 10x loupe for quick checks and take macro photos at 1:1 or greater magnification; focus stacks help preserve sharp edges in close-ups.
Shoot a straight-on image plus two oblique shots at roughly 30° from coin plane to show depth and the directionality of metal flow; include a ruler or millimeter scale in at least one frame for size reference.
Use low ISO (100–400) and a narrow aperture (f/8–f/16) to maximize detail, and keep shutter speed fast enough to avoid motion blur or use a tripod and cable release for razor-sharp images.
Diagnostic markers to separate die variety from wear or damage
A true die chip or cud will be raised above the normal surface, show rounded metal flow lines radiating from a single origin, and repeat in multiple strikes from the same die; surface knocks will have sharper gouge edges and inconsistent directionality.
Look for a matching location on multiple examples and for surrounding die stress signs such as micro-cracks; paired evidence increases the probability of an authentic die variety.
Confirm the mint mark: the San Francisco “S” at the reverse lower-left must match 1943-S characteristics; repunched mint marks or lifted metal near the S do not equal a trumpet-tail die chip.
Close-up photo checklist for clear identification
Take a full obverse and full reverse photo to document overall condition and for comparables.
Capture extreme close-ups of the suspected trumpet-tail area on both obverse and reverse, from multiple lighting angles, showing the raised profile and edges.
Get a comparison shot alongside a standard, undisputed 1943-S Mercury dime to show differences in the wing or fasces area.
Include a millimeter scale or ruler, and embed EXIF metadata when possible: focal length, aperture, ISO, and magnification help later reviewers trust the images.
Why the trumpet tail appears: minting mechanics and die damage
Die chips form when a piece of the die fractures or material around a die void breaks free, causing metal to pile up on struck coins and create a raised cud or horn.
Repeated press strikes accelerate die fatigue; cracks grow, and chips enlarge as the die sees tens or hundreds of thousands of impressions, especially under heavy mint workloads like the early 1940s.
Hub doubling and die misalignment can alter how stresses concentrate on the die, concentrating fractures in predictable spots such as wing feathers or the fasces heel.
Intentional varieties versus post-mint damage
Cataloged varieties show consistent, repeatable features across multiple coins struck from the same damaged die; post-mint damage appears randomly and differs on each affected coin.
Cleaning, filing, or tooling produces sharp, non-conforming marks, often revealing scratch patterns under magnification and inconsistent patina relative to the surrounding fields.
Typical die life and San Francisco Mint patterns in the early 1940s
During wartime production, die replacement frequency varied, but high output increased the chance that worn dies stayed in service longer, raising the odds of prominent die chips.
Planchet preparation and metal composition (90% silver, 10% copper) affect strike detail; harder planchets can limit metal flow, while softer ones accentuate raised die chips when material has room to extrude.
How rare is the 1943-S trumpet-tail variety — population and demand
Most trumpet-like marks on 1943-S dimes are isolated die chips or localized die breaks rather than widely cataloged varieties; isolated chips can be uncommon but not necessarily scarce.
Population counts matter: certified examples listed in PCGS VarietyPlus, NGC Census, or VarietyVista indicate collector recognition and increase market interest; anecdotal forum posts alone do not prove rarity.
Collector demand rises when multiple certified examples exist or a respected attribution links the chip to a known die; otherwise premiums are modest and driven by grade and eye appeal.
Where to look up population data and reported examples
Check PCGS VarietyPlus and PCGS Population, NGC Census and their attribution notes, and VarietyVista for variety listings and reported examples.
Search Heritage and Stack’s auction archives for sold lots and realized prices; registry set forums and specialist Mercury dime groups often post photographs and provenance that help confirm repeatable varieties.
Interpret counts carefully: certified submissions give stronger evidence than raw-photo posts, and a single certified example does not necessarily mean the variety is common.
Pricing and value guide for trumpet-tail 1943-S pieces
Price drivers are grade, eye appeal, certified attribution, and whether specialists accept the mark as a repeatable die variety rather than post-mint damage.
Broad retail/auction bands: circulated non-certified pieces with a small trumpet chip typically trade near standard date values plus a small premium — roughly $10–$50 depending on grade and eye appeal.
Higher grades and fully struck, attractive examples uncertified but well-documented can fetch $50–$250; slabbed and attributed die varieties that have registry recognition can command multiples of that range, sometimes more for scarcity and collector interest.
Real-world appraisal shortcuts
Search completed eBay and major auction houses by exact phrasing and images to find close comparables and realized prices over the past 12–36 months.
Cross-reference PCGS and NGC price guides for base date values, then apply a premium based on certification and documented provenance.
Contact a dealer who specializes in Mercury dimes or variety coins for a quick verbal appraisal and second opinion before listing or buying.
Authentication and third-party grading: when to slab
Submit for grading when the feature is potentially market-moving: obvious, repeatable die chips or when you intend to sell to a specialist collector market that values certified attribution.
Expect submission fees that depend on service level and rush options; budget $25–$150 per coin for grading plus any additional attribution or imaging fees and shipping costs.
Include high-quality photos and a concise description with the submission, highlighting the suspected die feature, its location, and any provenance to help graders evaluate whether the mark is die-made or post-strike.
Attribution labels and what to expect on slabs
Common attributions include “Die Break,” “Die Chip,” or a catalog reference if the variety is listed; some services add a custom variety nickname or census number when sufficient examples exist.
An attributed slab increases buy/sell confidence and usually improves resale potential, although the premium depends on collector awareness and registry inclusion.
Spot and avoid common fakes and alterations
Fraudsters mimic raised die features by filing, adding solder, or re-engraving; under magnification these alterations show tool marks, inconsistent metal flow, and mismatched patina.
Added mint marks or re-engraved lines often display abrupt transitions and a lack of concentric flow lines that real die chips produce during striking.
Careful inspection under 10x magnification, comparison with authenticated examples, and X-ray fluorescence or professional testing for composition can reveal many alterations.
Simple at-home tests before buying or selling
Weigh the coin and check diameter; authentic 1943 Mercury dimes weigh about 2.5 g and measure 17.9 mm; obvious deviations suggest tampering or counterfeit planchets.
Run a magnet test—silver dimes are non-magnetic—and visually inspect edges for uniform reeding and consistent wear patterns.
If you see tool marks, inconsistent toning, or a raised feature that looks carved rather than flowed, walk away or seek a third-party opinion.
Comparing the trumpet-tail to other Mercury dime die varieties
Compare your specimen to known varieties like repunched mint marks (RPMs), doubled dies, and other die breaks to test repeatability; RPMs and doubled dies show consistent, recognizable patterns across examples.
Some die chips become cataloged varieties because multiple coins from the same die exist in collections and registries; single-instance chips usually remain unattributed local anomalies.
Notable San Francisco mint varieties from the 1940s to cross-check
Watch for common S-mint markers: repunched S mint marks, small die breaks near the rim, and certain doubled die obverses; cross-referencing these helps avoid misidentifying unrelated marks as a trumpet-tail.
Use variety databases to view side-by-side images to confirm whether your mark is a recognized S-mint pattern or a one-off die chip.
Practical collecting advice: sourcing, storing, and trading trumpet-tail dimes
Source examples at specialist auctions, reputable dealers, variety forums with strong reputations, and variety shows where you can inspect coins in hand.
Store coins in inert holders, avoid PVC flips and harsh cleaning, control humidity, and keep a photographic inventory that includes scale and lighting notes to preserve and document die details.
When trading, provide clear photos, measurements, and any grading or attribution history to speed buyer confidence and support higher prices.
Building a focused Mercury dime variety collection
Decide whether you want a date/mint variety set or to chase single high-quality varieties; set a budget, prioritize certification for key pieces, and trade lower-tier duplicates to upgrade.
Keep provenance, receipts, and high-resolution images for every coin; good records increase resale prospects and help with future attributions.
How to photograph, list, and write a compelling sales description
Include full obverse/reverse images, three close-ups of the trumpet-tail area under oblique lighting, and a comparison shot with a standard 1943-S example.
In the description, state grade or certification, exact location of the feature (e.g., “obverse near upper-right wing feathers” or “reverse at lower fasces heel”), measurement of the chip, and any provenance.
Use clear, factual language: identify the feature as “raised die chip/possible die break” if uncertified and disclose any reservations rather than overstating rarity.
Pricing and sales channel recommendations
List on specialist auction houses for high-value or slabbed-attributed examples to reach collectors who pay premiums; use eBay or fixed-price dealer listings for lower-value raw pieces where wider audiences exist.
Set a reserve close to your minimum acceptable price when auctioning; for Buy-It-Now, price using recent comparables and add a clear returns policy to attract buyers.
Quick-reference resources, glossary, and next-step checklist
Primary resources: PCGS VarietyPlus and population, NGC Census, VarietyVista, Heritage and Stack’s auction archives, and active Mercury dime forums and specialist dealers.
Glossary: die chip = raised metal from die fracture; cud = large die break with a lump of metal on the coin; RPM = repunched mint mark; obverse = front; reverse = back; attribution = third-party identification of a variety.
Action checklist: photograph the coin with scale and oblique lighting; compare to variety databases; run basic weight and magnet tests; consult a specialist or submit to PCGS/NGC if the mark appears repeatable or valuable; price and list with clear, factual notes.
