1866 S Seated Liberty Dimes

What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.):

Note: A number of 1866-S Seated Liberty dimes were produced with an extremely weak "S" mint mark which can be barely seen. In some cases the mint mark is completely missing which can confuse collectors into thinking they have the ultra-rare version minted in Philadelphia. Other clues such as die crack locations need to be looked into in order to determine the true mint of this coin.

Coin Value Chart: Typical Coin Prices, Values and Worth in USD based on Grade/Condition. Numismatic portion of the values last updated February 2026, precious metal portion of the values is updated live!

Good (G-4)	Very Good (VG-8)	Fine (F-12)	Very Fine (VF-20)	Extremely Fine (EF-40)	About Uncirculated (AU-50)	Uncirculated (MS-60)	Uncirculated (MS-63)	Proof (PR-63)
$152	$228	$304	$532	$760	$1,882	$4,251	$7,816	-

USA Coin Book Estimated Value of 1866-S Seated Liberty Dime is Worth $228 in Average Condition and can be Worth $4,251 to $7,816 or more in Uncirculated (MS+) Mint Condition. Click here to Learn How to use Coin Price Charts. Also, click here to Learn About Grading Coins. The Melt Value shown below is how Valuable the Coin's Metal is Worth (bare minimum value of coin). Click here to see the Melt Value of every US Coin.


MELT VALUE: $5.5262