澳门2009年20元精製彩银。纪念澳门从葡萄牙殖民地回归中国。估计发行量为5,600枚。镜面底板,霜面图文。MACAU. 20 Patacas, 2009. PCGS PROOF-70 DEEP CAMEO Gold Shield.。KM-151. Struck to commemorate the return of Macau to China by the Portuguese. From an estimated mintage of only 5,600 pieces. Brilliant with hard mirror fields and frosted cameo devices.。