The United States Bicentennial Proof Set of 1976 contains six coins from the U.S. Mint, including denominations of $1, 50 cents, 25 cents, 10 cents, 5 cents, and 1 cent. These coins are all uncirculated and struck in proof condition, making them highly desirable for collectors. The set commemorates the 200th anniversary of the United States and features coins with a special design to celebrate this milestone event. The certification from the U.S. Mint adds authenticity and value to this historic collection.