1926-S Mercury Dime: San Francisco’s Soft-Strike Puzzle
Coin Encyclopedia · 7 min read · Published November 7, 2026
The 1926-S Mercury dime looks like an ordinary coin. San Francisco struck 1,520,000 of them in 1926, and nothing about the date suggests drama. Then the strike takes over — the 1926-S is one of the weakest-struck dates in the whole series, and a fully struck example is a coin most collectors never see.
This page is about that gap. The mintage, the mint mark, the bands, and the difference between a soft strike and wear are all here, because on the 1926-S those four things are the entire value of the coin.
San Francisco and the weak strike
The San Francisco Mint struck Mercury dimes from the series’ first year, and its 1926 output of 1,520,000 was unremarkable in size. What made the date remarkable was the quality of the strike. The 1926-S dies produced coins with soft central detail: the bands of the fasces blend together, the hair above Liberty’s eye is shallow, and the olive branch on the reverse loses its sharp edges. Collectors who specialise in Mercury dimes know the 1926-S as one of the softest dates in the series, alongside the 1921-D.
A weak strike is not damage and it is not wear. It is how the coin left the mint, and it affects the whole date, not one coin. That is why the grade table for the 1926-S is all dashes: worn examples are plentiful and cheap, because the mintage was ordinary and the coins circulated; but a Mint State example with genuinely full bands is vanishingly rare, because the dies so seldom produced one. Our guide holds no researched figure for this date yet, so nothing is guessed.
What a 1926-S Mercury dime is worth by grade
The table below comes from our Mercury dime guide. No grade of this date is researched yet, so every row shows “—”, not a guess.
| Grade | Estimated value |
|---|---|
| Good (G-4) | — |
| Fine (F-12) | — |
| Extremely Fine (XF-40) | — |
| About Uncirculated (AU-50) | — |
| Mint State 60 (MS-60) | — |
| Mint State 65 (MS-65) | — |
Guide values reviewed November 5, 2026 — figures update live from our Worker.
The shape of this date is a mintage that was ordinary but a strike that was not — and it is why the bands matter more on this date than on almost any other Mercury dime.
Read the table with the strike in mind. A 1926-S in Mint State without full bands is a different coin from a 1926-S in Mint State with them, and the guide’s Mint State figure belongs to the strongest examples. The live figures above update from our Worker as new results are reported.
The Full Bands test on a soft date
Turn the coin over and find the fasces. Three horizontal bands wrap the bundle, and Full Bands means the middle band is split cleanly into two distinct lines with a visible gap between them, across its whole width. On most Mercury dates a careful collector can find that split; on the 1926-S, most coins fail the test even in Mint State, because the strike never formed the split in the first place.
Here is the distinction that matters: wear flattens the high points and dulls the lustre, while a soft strike leaves the lustre intact and the detail simply shallow. A Mint State 1926-S with full cartwheel lustre and blended bands is a soft strike, not a worn coin — and it still carries a premium over a circulated example, just not the Full Bands premium. Tilt the coin under a single light and watch the lustre roll across the surface: if it rolls, the coin is uncirculated; if the bands are split as well, it is the rare one.
Reading the S
On a Mercury dime the mint mark sits on the reverse, low on the left beside the fasces near the rim — D for Denver, S for San Francisco, and no letter for Philadelphia. A 1926 Philadelphia dime is a common silver coin; a 1926-S is the soft-struck key date of this page. The letter is small, and on a worn reverse it can be hard to read, so use a 5x to 10x loupe and good light.
Check the date as well. The 1926-S is often confused with the common 1926 Philadelphia issue, and the difference is only the S. Read the date on the obverse at the lower right first, then the mint mark on the reverse. A coin with a clear 1926 and a clear S is the coin this page is about; a coin with a clear 1926 and no S is a different coin entirely.
Specs and the silver floor
Under the rarity, the 1926-S is a standard Mercury dime: 90% silver and 10% copper, 2.5 grams, 17.9 millimetres across, with 0.07234 troy ounces of pure silver — about $3.77 at the November 2026 silver level near $52.07 an ounce. The series ran from 1916 to 1945 to the design of Adolph A. Weinman, before the Roosevelt dime replaced it.
Metal floor updates live from our Worker — last updated November 7, 2026.
That silver floor is the least interesting thing about this coin, but it is the reason even a heavily worn example never falls to face value. The rest of its worth is the mintage, the mint mark, the strike, and the grade — in that order.
Verified auction records
No standalone record for the 1926-S sits in our verified records file. The series record belongs to the 1916-D: a Mint State 67 Full Bands example that reached $207,000 at Heritage in August 2010. That figure describes a single coin in the finest known grade, not this date — the grade table above, and the live results panel below it, are the honest measures for the 1926-S.
What the 1916-D record does show is what happens when a low-mintage date meets a full strike in the finest grade. The 1926-S is the same story at a smaller scale: an ordinary mintage, a weak strike, and a gem premium that surprises everyone who only looks at the worn value.
Latest reported results for this coin
Checking for newly reported results…
Your 1926-S Mercury dime questions, answered
How much is a 1926-S Mercury dime worth?
Our Mercury dime guide holds no researched figure for the 1926-S yet, so the grades show as — in the table above until live results fill them in.
Why is the 1926-S so expensive in Mint State?
The 1926-S is one of the weakest-struck dates in the Mercury series. Worn examples are common, but a Mint State example with genuinely full bands is vanishingly rare, because the dies so seldom produced a full strike.
How do I tell a weak strike from wear on a 1926-S?
Wear flattens the high points and dulls the lustre; a soft strike leaves the lustre intact and the detail simply shallow. Tilt the coin under a single light: if the lustre rolls across the surface, the coin is uncirculated even if the bands are blended.
Where is the mint mark on a 1926-S Mercury dime?
On the reverse, low on the left beside the fasces near the rim. S means San Francisco; no letter means Philadelphia, and a 1926 Philadelphia dime is a common silver coin.
Is the 1926-S Mercury dime silver?
Yes. Every Mercury dime dated 1916 to 1945 is 90% silver, with 0.07234 troy ounces of pure silver. The live metal floor for this coin is in the specs section above.
Check your 1926-S
Run the date and mint mark through the free Coin Value Checker for an instant estimate, or get a Grade-or-Not verdict on whether your coin is worth certifying. The full series guide is here: Mercury Dime Values: 1916-D, Full Bands & $207,000+ Records.
Written for the hunt: the 1926-S rewards the collector who looks at the bands instead of the date, and this guide exists so the next soft-strike gem gets recognised before it is spent.
This guide is for education — learn the coin first, and get a professional opinion before buying or selling.