2017年世界钱币展览会·柏林——中德友好特别展铜镀金质纪念熊猫试打币,直径40mm,精制镜面,试打量3枚,NGC PF69 ULTRA CAMEOCHINA-BERLIN 2017 World Money Fair Berlin — Sino-German Friendship Berlin Special Exhibit 1 Oz Gold,Gold Plated Copper Die Trial Proof,Commemorative Show Panda,die trial of 3,NGC PF69 ULTRA CAMEO