1990年20元,龙凤系列。龙下有一条氧化痕迹,长城塔台旁有一处奶白色斑点。镜面底板,霜化图文,精美诱人。
CHINA. 20 Yuan, 1990. Dragon and Phoenix Series. NGC PROOF-66 ULTRA CAMEO。KM-318. A streak of toning below the dragon and a milk spot near the tower of the Great Wall. Brilliant with hard mirror fields and frosted cameo devices。