Collectible coins, particularly those from the United States, encompass a range of types, including commemorative coins, bullion coins, and proofs. The 1-cent coin, commonly known as the penny, has undergone various design changes since its inception. Proof sets are specially produced coin sets that showcase coins with a high level of detail and a mirror-like finish, intended for collectors. The 2018 Proof Set includes a selection of coins issued by the U.S. Mint that year, featuring unique designs and the quality characteristic of proof production.

Item Denomination Series Year Mint
2018-S 1c-$1 Proof Set 10 Coins 1c-$1 Proof Sets 2018 San Francisco