Jaime Hernandez: The Pennsylvania State Quarter is the second design which was introduced in the 50 States Quarter Program.
The Pennsylvania State Quarters were released on March 8, 1999. The state of Pennsylvania was admitted into the Union on December 12, 1787.
The reverse design features an outline of Pennsylvania and the Commonwealth Statue along with the legends Virtue, Liberty and Independence.
Pennsylvania circulation strike quarters were produced at Philadelphia and at the Denver Mints. Philadelphia coins will display a P mint mark and the Denver coins will display a D mint mark.
Pennsylvania Clad and Silver Proof Quarters where also produced by the U.S Mint. Both Clad and Silver Proof Quarters will contain an S mint mark, since they were produced at the San Francisco Mint. Proof Clad Quarters will display copper on the reeded edge. Silver Quarters will display a silver looking edge.