1776-1976 Both Bicentennial Sets Proof And Uncirculated. The U.S. Mint created a special Bicentennial set of silver proofs and uncirculated coins to celabrate the United State 200 years. Each silver proof is made of 40% silver! The set includes an Eisenhower Dollar, a JFK Half Dollar, and a Washington Quarter, each in Proof and Brilliant Uncirculated condition. The designs are emblematic of the Bicentennial of American Revolution and were selected through a national coins design competition. This set comes in its original government packaging and COA.