Watch List notes:

BANKNOTES. CHINA - REPUBLIC, GENERAL ISSUES. Bank of China: Uniface Obverse and Reverse Proof 1-Yuan, obverse brown, two reverses: with and without place name, Uniface Obverse Proof 5-Yuan, orange, September 1918, Tientsin, unperforated and mounted on card stock, ABNC Archive Proofs (P 51q, 52p). Uncirculated.
(4pcs)

Estimate: US$300-400