State Quarter 1999 - 2008

Weight: Clad: 5.7 grams, Silver: 6.25 grams

Normal Content: Cladding 75% copper, 25% nickel, core 100% copper.

Silver Proof Content: 90% silver 10% copper

Diameter: 24.3 millimeters

Mint Mark Legend

Just to the right of the ribbon on the obverse.

P    Philadelphia    1793-present
D    Denver, CO    1906-present
S    San Francisco, CA    1854-1955; 1968-present