Watch List notes:

China (People's Republic), silver proof piefort 10 yuan (2 oz) Panda, 1991, 10th Anniversary of the Issuance of Chinese Panda Commemorative Coins, NGC PF 69 Ultra Cameo. KM-356; PAN-160A. Starting to tone around the rims. One of only two double-thickness issues in the entire Panda series (the other being the previous lot in gold), both struck this year to commemorate the 10th anniversary of Panda coinage. Only two higher at PF 70 in the current NGC census. Mintage: 10,000 (planned; actual and surviving unknown). Pedigreed to the Gansu Collection of Chinese Panda Coinage.

Estimate: $300 - $450