China
People's Republic silver Proof 100 Yuan (12oz) 1987 Choice Cameo Proof, KM177. In the original case with COA. Commemorating the 125 Anniversary of Zhan Tianyou. Boldly struck, with frosted devices and deeply mirrored fields. The surfaces show only minuscule marks. Mintage of 2,911 pieces.
Estimate: 800-1000 USD