These stamps were primarily printed by the Dah Yeh Printing Press in Shanghai. During the transition period in 1949, "Air Mail" was overprinted on revenue stamps, and non-denominated green plane stamps.These featured either horizontal overprints (Peiping/Hong Kong prints) or vertical overprints (Shanghai prints).
Shown here:
- Green and blue stamps feature a Junker F-13 aircraft flying over the Great Wall of China. They were surcharged with $50,000 over original value.
- Blue stamp depicting an airplane flying over the Sun Yat-sen Mausoleum in Nanjing. It was overprinted with a value of $10,000.


















