1918-S Mercury Dime Value
A 1918-S Mercury Dime is worth roughly $2.70 to $26.50 depending on its condition; the melt floor under every example is $2.64 (spot prices as of 2026-06-01) Certified examples in top grades can run far higher.
1918-S Mercury Dime value by grade
| Grade | Estimated value |
|---|---|
| Melt value floor(metal content, 2026-06-01) | $2.64 |
| Good (G-4) | $2.70 to $3.55 |
| Very Good (VG-8) | $2.70 to $3.70 |
| Fine (F-12) | $2.70 to $3.90 |
| Very Fine (VF-20) | $2.85 to $4.20 |
| Extremely Fine (XF-40) | $3.25 to $4.80 |
| About Uncirculated (AU-50) | $3.95 to $5.80 |
| Mint State (MS-60) | $4.95 to $7.25 |
| Choice Unc (MS-63) | $6.75 to $9.90 |
| Gem Unc (MS-65) | $18.00 to $26.50 |
Estimated retail range, updated 2026-06-15. Estimates are modeled from mintage rarity and metal content, not auction records. Actual sale prices vary with certification, eye appeal and market timing.
How much is a 1918-S Mercury Dime worth today?
At the entry level, well-worn examples bring about $2.70. The same coin in gem uncirculated condition is a $26.50 coin. Grade is everything: two examples of the 1918-S Mercury Dime can differ in price by an order of magnitude based purely on preservation.
1918-S Mercury Dime specifications
- Series
- Mercury Dime
- Year
- 1918
- Mint mark
- S
- Mintage
- 19,300,000
- Composition
- 90% silver, 10% copper
- Weight
- 2.5 g
- Diameter
- 17.9 mm
- Edge
- Reeded
- Designer
- Adolph A. Weinman
- Silver content
- 0.07234 troy oz
Mintage figure: US Mint reports (approximate).
Locating the mint mark on this coin
On a 1918-S Mercury Dime, the "S" mint mark of the San Francisco Mint sits on the reverse, to the right of the fasces base, left of the E in ONE. A loupe helps: on worn examples the letter can fade into the surrounding devices.
What makes the 1918-S Mercury Dime valuable
With 19,300,000 struck, the 1918-S Mercury Dime is one of the more available dates of its series. Its value rests on metal content and condition rather than absolute rarity, which makes it an ideal type coin.
The 90% silver composition gives a 1918-S Mercury Dime 0.0723 oz of precious metal ($2.64 at current spot). Bullion demand alone supports the bottom of its price range.
There is history in a 1918 Mercury Dime as well. Grading centers on the reverse bands binding the fasces: coins with Full Bands, complete horizontal separation, can be worth multiples of ordinary Mint State pieces, especially for branch-mint dates of the 1920s. That backdrop keeps the series among the most actively collected in American numismatics.
Summary: the 1918-S Mercury Dime is valued between $2.70 and $26.50 as of 2026-06-15. Estimates combine mintage rarity, key-date status and metal content; they are editorial guidance, not an offer to buy.