2017年100元。孔子头像图案。单面钱币,反面以金试铸。十分稀罕,本行所见此款首例。正面镜面底板,霜化图文,反面哑光质地。NGC PROOF-69 ULTRA CAMEO.CHINA. 100 Yuan, ND (2017). NGC PROOF-69 ULTRA CAMEO.7.8 gms. KM-unlisted. Confucius. Uniface reverse die trial struck in gold. VERY RARE and the first such piece that we have seen. Brilliant with hard mirror fields and frosted cameo devices on the obverse, the reverse has a matte finish.