拍品描述： 1880 Trade Dollar. Proof-64 (ANACS). OH.This deeply toned specimen is awash in a bold blend of crimson-copper, olive-russet and antique gold, the surfaces revealing vivid undertones of blue, pink and lilac at direct lighting angles. The Philadelphia Mint is the only coinage facility that struck trade dollars in 1880, and the 1,987-coin mintage was comprised solely of Proofs. Survivors are always in demand for high grade type purposes.