CHINA. Silver 50 Yuan (5 Ounce), 1993. Inventions & Discoveries Series: Yin & Yang Philosophy. NGC PROOF-69 Ultra Cameo.

KM-507. Diameter: 69mm. Mintage: 803. A fairly SCARCE and interesting type, this enticing specimen verges upon perfection and presents highly frosted devices paired with exceptionally mirrored fields, ultimately forming a great cameo allure with no haziness or spotting.

Estimate: $1000.00 - $2000.00

1993年50元5盎司，古代發明與發現系列。太極圖。

直徑 69 毫米。發行量 803 枚。頗珍罕而有趣的版別。與完美品相只有一綫之差。圖文霜化濃郁，底板鏡面鋥亮，浮雕凸出，無起霧或斑點。