Collectible coins are numismatic items that are valued for their historical significance, rarity, condition, and aesthetic appeal. In the United States, coins such as the 1 cent (1c) piece, often referred to as the penny, hold particular interest among collectors. The 2001 Proof Sets were issued by the U.S. Mint, featuring coins struck in a special process that results in a mirror-like finish. These sets, which include various denominations, are sought after for their superior quality and limited production, making them valuable for collectors and investors alike.

Item Denomination Series Year Mint
2001-S 1c-$1 Proof Set 10 Coins 1c-$1 Proof Sets 2001 San Francisco