1930年中央银行关金券2枚一组,包括10分及20分,均评PMG64, 其中一枚有针孔。Central Bank of China, pair of 10 cents and 20 cents Customs Gold Units, Shanghai, 1930, serial numbers P054474 and A011630 respectively, both vertical format, with Sun Yat Sen at top centre,(Pick 323b and 324a), graded PCGS Gold Shield Choice Uncirculated and Choice Uncirculated Details (Pinholes) (2)