The 1991 Clad Proof Set from the U.S. Mint is a valuable collection of coins in uncirculated condition, each struck with a proof finish. This set includes coins of various denominations, such as 1 cent, 5 cents, 10 cents, 25 cents, and 50 cents, all made of copper-plated zinc and copper-nickel. This set is original government packaging with a Certificate of Authenticity from the U.S. Mint, making it a desirable addition to any coin collector's stash. Made in San Francisco, this set is a piece of United States history encapsulated in a pristine proof condition.