2011年100元。清华大学建校100週年纪念。无斑点、氧化或起雾,光泽亮丽诱人。PCGS PROOF-70 DEEP CAMEO Secure Holder.CHINA. 100 Yuan, 2011. PCGS PROOF-70 DEEP CAMEO Secure Holder.Fr-320; KM-1801. Struck to commemorate the centennial of Tsinghua University. No spots, tone or fog, brilliant and attractive.