Collectible coins encompass various types, including national and regional issues, as well as private mintage varieties. In the context of the United States post-1776, coins such as the 1 and 2 Dollar denominations reflect significant historical developments. The year 1794 is notable for the minting of some of the first coins by the U.S. Mint in Philadelphia, marking a pivotal moment in American numismatic history. These early issues are highly sought after by collectors due to their rarity and historical significance.