Collectible coins encompass a wide range of numismatic items, including historical currency, commemoratives, and regional or private issues. In the United States, post-1776 one-dollar coins have seen various designs, including the iconic Silver Dollar series, which celebrates important figures and events in American history. Private and regional issues often feature unique designs and may be produced by local mints or associations, reflecting specific cultural or historical significance. These coins are sought after by collectors for their rarity, artistic value, and connection to American heritage.