This striking airmail block from the Chinese Nationalist period features a 1948 lithographed issue depicting a Douglas DC-4 aircraft flying over the Sun Yat-sen Mausoleum in Nanjing. Originally printed in blue, this stamp was later overprinted with a bold black boxed surcharge reading “10000.00” in response to the rampant hyperinflation during the late stages of the Chinese Civil War. Issued on May 18, 1948, and printed in Shanghai by the Dah Tung Book Co. and Dah Yeh Printing Co., this block of twelve is ungummed as issued and has line perforation 14. The vertical black characters to the right read 改作壹萬圓, indicating the revaluation to 10,000 Chinese dollars. The design symbolizes the Republic’s vision of modernity and national unity, with the DC-4 representing progress and the mausoleum below grounding it in revolutionary legacy. Catalogued as Michel CN-IM 856, Scott CN-IM C61, Yvert et Tellier CN PA44, Stanley Gibbons CN-IM 1028, and CSS CN-IM AM100, this block is in immaculate MNH condition with full margins and excellent centering. Its rarity and historical relevance make it a prized item for advanced collectors of Chinese airmail or hyperinflation-era issues. Estimate "$400 – 500"