Collectible coins refer to coins that are sought after by collectors for their historical significance, rarity, condition, or unique features. In the United States, collectible coins include a variety of denominations and types, such as the 1 cent (1c) coins. Proof sets, like those released in 1978, contain coins that have been struck with higher precision and care, resulting in a mirror-like finish. These sets often appeal to collectors due to their quality and limited production runs.

Item Denomination Series Year Mint
1978-S 1c-$1 Proof Set 1c-$1 Proof Sets 1978 San Francisco