Watch List notes:

BANKNOTES. CHINA - REPUBLIC, GENERAL ISSUES. Bank of China: Uniface Obverse and Reverse Proof 1-Yuan, purple, and 10-Yuan, green, September 1918, Shansi, unperforated and mounted on card stock, ABNC Archive Proofs (P 51n, 53u). Uncirculated.
(4pcs)

Estimate: US$700-900