2 Chiao 5 Fen / 25 Cents Bank of Chinan

The Bank of Chinan was a Japanese-sponsored institution established in 1938 to serve the occupied territories of Shandong province, issuing currency designed to displace both Nationalist Chinese notes and the older provincial paper. This 25-cent denomination targets the small-denomination retail market that silver subsidiary coinage had previously served — metal having largely disappeared from circulation once the occupation disrupted normal commerce.

The S-prefix in the Pick reference places this firmly in the specialized category, and the A suffix on S3065 indicates a distinct variety within the issue, likely a signature or overprint distinction rather than a major design change.