The U.S. State quarter series started in 1999 and the final ten issues were released in 2008, completing the immensely popular program. Each unique design honors the state's history and traditions. The series follows each state's admission to the Union, from Delaware to Hawaii. Our complete 100-coin set includes both the Philadelphia (P mintmark) and Denver (D) issues for all 50 state tributes in beautiful Brilliant Uncirculated quality. If you purchased each coin separately you'd pay over $200!