1999-S U.S. 25¢ - Pennsylvania State Washington Quarter - Silver Proof
- Country: United States
- Period: Federal Republic (1776-Date)
- Type: Non-Circulating Coin
- Years: 1999
- Mint: United States Mint - San Francisco (1854-Date)
- Denomination: 25 Cents = Quarter Dollar
- Currency: United States Dollar (1785-Date)
- Composition: .900 Silver
- Diameter: 24.3mm
- Weight: 6.25g
- Edge: Reeded
- Mintage: 804,565
- Condition: Proof - PF
- Obverse: The portrait in left profile of George Washington, the first President of the United States from 1789 to 1797, is accompanied with the motto "IN GOD WE TRUST" and the lettering "LIBERTY" and it is surrounded with the face value and the inscription "UNITED STATES OF AMERICA"
- Reverse: The statue "Commonwealth", an allegorical female figure, against the outline of the state, is accompanied with the state's name ("PENNSYLVANIA"), the date of its admission into Union ("1787"), a keystone which illustrates its nickname (The Keystone State), the three words "VIRTUE LIBERTY INDEPENDENCE" and the motto "E PLURIBUS UNUM"
- Reference: KM# 294a, Schön# 294
*Coin condition is based on our professional opinion. Pictures are representative of the coin that you will receive, actual coin may differ slightly, and serial numbers may vary*