1992年100元。古代科技发明发现系列。铸铜术。近无瑕品相的纪念版。含带编号证书。(t) CHINA. Bronze Age Urn Gold 100 Yuan, 1992. Inventions & Discoveries Series I. NGC PROOF-69 Ultra Cameo.Fr-46; KM-419. A charming commemorative issue in nearly flawless condition. Includes numbered certificate of authenticity.