Collectible coins, particularly from the United States, include various denominations and types, with significant interest in mint errors, specific dates, and locations. The 1 cent coins, or pennies, issued in 2022 by the Denver Mint may feature unique designs, such as the Lincoln cent or commemorative series. Collectors often seek to acquire full rolls of these coins for their potential numismatic value and rarity, making them desirable for both hobbyists and investors in the coin market.