1866 Seated Liberty Half Dollars : Unique Proof - Not Regular Issue

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

The 1866 No Motto Seated Liberty Half Dollar is one of the rarest and most valuable of all US coins. This coin does not contain the motto "IN GOD WE TRUST" above the eagle - which was added for all other 1866 half dollars. Only one unique pattern coin of this type was ever produced and it was part of a set containing 1 unique seated liberty quarter and 2 seated liberty dollar coins without the motto. Each of these coins are worth well over $1 Million!

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)
-	-	-	-	-	-	-	-	$1,341,635

USA Coin Book Estimated Value of 1866 Seated Liberty Half Dollar (Unique Proof - Not Regular Issue Variety) is Worth $1,341,635 or more. 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: $21.39