China, Kirin Yung Heng Provincial Bank, set of 1, 5 and 10 yuan obverse and reverse uniface specimen pairs, Harbin, 1st December 1923, from the American Banknote Company archives, different buildings in centre, all numbered 000000 and overprinted SPECIMEN in red, also with 2 Chinese characters, small hole cancels (Pick S1051s-53s; S/M C76-111,113 & 115), about uncirculated (3 notes, 6 pieces)

Estimate: GBP 800-1000