Collectible coins, such as the United States 1 cent coin (penny) from 1956, are sought after for their historical value, rarity, and condition. The 1956 penny, part of the Lincoln cents series, is notable for its design by Victor David Brenner, featuring President Abraham Lincoln on the obverse and the Lincoln Memorial on the reverse. Collectors often look for specific attributes, such as mint marks and uncirculated condition, which can significantly affect the coin's market value. Rolls of mint-condition 1956 cents are particularly valuable to numismatists.