Collectible coins, particularly in the context of the United States, encompass a wide variety of types including commemorative coins, bullion coins, and collectible sets. One notable category is proof sets, which are specially minted coins characterized by their high-quality finish and intricate detail. The 2012 Proof Set, for instance, includes coins produced by the U.S. Mint with a polished, mirror-like background that enhances their aesthetic appeal. Collectors often seek these sets for their intricate designs and limited mintage, contributing to their desirability and value in numismatic circles.

Item Denomination Series Year Mint
2012-S 1c-$1 Proof Set 14 Coins 1c-$1 Proof Sets 2012 San Francisco