This 1941 airmail series from the Japanese occupation of Central China features seven different denominations surcharged in Japanese sen on earlier Chinese airmail issues depicting an aircraft flying over the Great Wall. The overprints reflect the enforced currency standards of the Japanese military administration, with values ranging from 10 to 60 sen applied in black or red overprint to the original Chinese denominations from 50 cents to 2 dollars. The original designs were printed by Commercial Press Ltd., Hong Kong, using gravure, without watermark, and feature variable perforation. The imagery combines patriotic Chinese symbolism with modern aviation, recontextualized under occupation. Among the set is the red double-overprinted 35-on-2-dollar stamp, a key variety. These stamps are cataloged as Scott 9NC1–9NC7, Michel JP-CC 1–6, Stanley Gibbons JP-CC 1–7, Yvert et Tellier CN-OJ PA1–PA7, and China Stamp Society CN-IM AM50–AM55. All examples shown are mint, well-centered with full original gum and clean margins, illustrating both the disruptive impact of wartime occupation and the continued use of symbolic landscapes in airmail design. Estimate "$180 – 220"