Collectible coins, particularly in the context of the United States, encompass various types including patterns, which are experimental coins struck to test designs before mass production. The 1849 One Dollar coin, produced in Philadelphia, is notable as a pattern coin, representing early attempts at establishing the dollar denomination in the U.S. Mint. These coins are valued for their historical significance, rarity, and unique designs, making them highly sought after by collectors.

Item Denomination Series Year Mint
1849 PG$1 Gold J-115 $1 (One Dollar) Patterns 1849 Philadelphia