Collectible coins, particularly those from the United States, can be categorized into various types based on denomination, year, and rarity. The 1-cent coin, commonly referred to as the penny, has seen multiple designs since its inception. The 1931 Lincoln penny is notable among collectors due to its lower mintage and significance during the Great Depression era, leading to heightened interest and value in well-preserved specimens. Rolls of 1931 cents might contain uncirculated or circulated coins, impacting their overall worth in the collectible market.