The 1776 - 1976 US Mint Bicentennial Proof Set is a collection of 6 uncirculated coins each with a denomination of $1. This set includes coins made of copper clad composition, minted in San Francisco in 1976. Each coin is struck in proof condition and comes with a display box. This set is certified by the U.S. Mint and is a celebration of the United States Bicentennial. The set is a valuable addition to any coin collector's portfolio.