Collectible coins, such as the 1996 Denver 1-cent coin, also known as a penny, are part of numismatics, the study of currency and coins as a hobby or investment. The 1996 penny features the image of Abraham Lincoln and is significant for its historical context and minting location. Collectors often seek out specific variations, such as different mint marks or errors, which can affect the coin's rarity and value. Coins from the United States, including the cent, are widely collected and can hold significant numismatic value depending on their condition and mintage.