Collectible coins, particularly in the context of the United States, encompass a variety of denominations, including the 1 cent (1c) and 50 cent (50c) coins. Mint sets, which are collections of coins issued by the U.S. Mint, often include coins from a specific year along with a protective packaging. The 1970 Mint Sets are noteworthy among collectors, as they provide uncirculated coins from that year, appealing to both numismatists and investors due to their historical significance and potential value.