USA Coin Book
Quarters Washington 1991-S
1991 S Washington Quarters
Clad Composition
Mintage: 2,867,787
Metal Composition: 91.67% Copper - 8.33% Nickel
Diameter: 24.3 mm
Mass / Weight: 5.67 grams
What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.): 1991 S Washington Quarters were struck only as Proof coins.
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-65)
Proof (PR-65)
- - - - - - - - $4.96
USA Coin Book Estimated Value of 1991-S Washington Quarter (Proof Coin) is Worth $4.96 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: $0.0756
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