Collectible coins encompass a variety of types, including patterns, die trials, and historical pieces from specific mints. One notable example is the G-10 patterns and die trials produced in San Francisco around 1850. These coins are often sought after by collectors due to their rarity and significance in U.S. numismatic history. The San Francisco mint played a crucial role in coin production during this period, contributing to the development of American currency.

Item Denomination Series Year Mint
1850 G$10 Baldwin Horseman, Silver Restrike G$10 Patterns & Die Trials 1850 San Francisco