Collectible coins, particularly those from the United States, encompass a variety of types including numismatic coins, bullion coins, and commemorative issues. The 1 cent (1c) coins are significant in American numismatics, with various design changes reflecting historical and cultural themes. Proof sets, such as those minted in 1989 at the San Francisco Mint, feature specially struck coins with a high-quality finish, intended for collectors and providing a distinct appearance due to their mirror-like surface and sharp details. These coins are highly sought after by collectors for their quality and historical value.

Item Denomination Series Year Mint
1989-S 1c-$1 Prestige Proof Set 1c-$1 Proof Sets 1989 San Francisco