500 Yuan Bank of Chinan

The Bank of Chinan (齊南銀行) was a Japanese-sponsored institution established during the occupation of Shandong province, issuing currency to facilitate economic control of the region. By 1945 — the final year of Japanese occupation in China — confidence in occupation-backed paper was collapsing, and large denominations like this 500 Yuan were partly a response to accelerating inflation rather than genuine commercial demand.

The S-prefix in the Pick reference places this firmly in the "Specialized" Chinese issues volume, a category that has historically received inconsistent scholarly attention, leaving some printing and emission details for this series poorly documented.