Watch List notes:

China (People's Republic), silver proof 50 yuan (5 oz) Panda, 1988, NGC PF 69 Ultra Cameo. KM-188; PAN-83A. Only two higher in NGC census at PF 69*. Lightly toned around rim. Anthony: "significantly scarcer than the 1987." Mintage: 11,000 (planned; actual and surviving unknown). Pedigreed to the Gansu Collection of Chinese Panda Coinage.

Estimate: $300 - $450