Trade Dollar

The United States Trade Dollar is a silver dollar coin that was issued by the United States Mint and minted in Philadelphia, Pennsylvania, Carson City, and San Francisco from 1873 to 1885. Business strikes ended in 1878. The coin was designed by William Barber, the mint's chief engraver. More trade dollars were minted in San Francisco than Carson City and Philadelphia combined. San Francisco was closest both to the source of the silver as well as the ultimate destination of the coins, China. Many Trade Dollars have what are called "chop marks" on them. The Chinese merchants would stamp the coins as a way to check their authenticity and to add their advertising logo. Collectors are warned that recently a large number of U.S. -Wikipedia