Watch List notes:

BANKNOTES. CHINA - REPUBLIC, GENERAL ISSUES. National Commercial Bank Ltd: Uniface Obverse and Reverse Proof 5-Yuan, red/blue, and 10-Yuan, green/black, 1 October 1923, unperforated and mounted on card stock, ABNC Archive Proofs (P 518, 519). Uncirculated.
(4pcs)

Estimate: US$800-1,000