This set includes 1986, 1987, and 1991-S proof sets from the U.S. Mint in their original government packaging (OGP). The coins in this set have never been circulated and are in pristine condition. Each set includes the 1C, 5C, 10C, 25C, and 50C denominations, minted in either copper-plated zinc or copper-nickel composition, and struck in proof condition at the San Francisco mint. The coins are certified by the U.S. Mint and come with their original OGP. This is a great addition to any coin collection or as a gift for a collector.