Collectible coins from the United States, particularly those from the 1970 Mint Sets minted in Philadelphia, include a variety of denominations such as the 1 cent (1c) to 50 cent (50c) coins. Mint Sets are sealed packages containing uncirculated coins from a specific year, showcasing the designs and finishes produced by the U.S. Mint. The 1970 Mint Set features coins that are sought after by collectors for their pristine condition and historical significance, reflecting the currency in circulation during that era. Collectors often focus on complete sets as well as individual high-grade coins from this period.