The Gorham Pure Coin mark appears on silver items crafted during the mid-19th century, before the widespread adoption of the sterling standard in the United States. "Pure Coin" refers to coin silver, which typically contains around 90% pure silver, made from melted U.S. coins. This mark was used by Gorham during its early years, reflecting a time when American silversmiths transitioned from small-batch, handmade production to more standardized manufacturing. Pieces bearing this mark are highly collectible for their historical significance, early American craftsmanship, and connection to the roots of Gorham’s rise as a premier silver manufacturer.