Collectible coins encompass a variety of types, including numismatic coins, bullion, commemoratives, and error coins. The sixpence (6p) is a historical coin, particularly significant in the UK, but similar denominations were also produced in the United States. Pre-1776 coins often include private and regional issues that circulated in the colonies prior to American independence, reflecting the country's colonial heritage. The year 1616 is notable for various historical coin issues, especially in Europe, impacting later coinage in the American colonies.