This trio of surcharged definitive stamps from the Junk/Reaper series of the Republic of China highlights key themes in the country’s modernization efforts—maritime commerce, agriculture, and infrastructure—during the Republican era. The first stamp, originally a 4-cent green Junk issue from the Second Peking Print (Scott IM 325), was revalued to 1 cent in 1935 with a red overprint. The second, from the First Peking Print (Scott IM 247), issued in 1922, shows a junk alongside modern vessels and was surcharged in red to 2 cents. The third, a 15-cent blue Reaper stamp (Scott IM 339), was issued in 1936 and similarly revalued to 5 cents, emphasizing the agricultural economy of northern China. All three stamps were printed using gravure by the Chinese Bureau of Engraving and Printing with line perforation 14, and they bear no watermark. They are cataloged respectively as Michel CN-IM 277, CN-IM 182, and CN-IM 287; Yvert et Tellier CN-IM 207B, 179, and 254; Stanley Gibbons CN-IM 369, 361, and 452; and China Stamp Society CN-IM 333, 326, and 334. In pristine mint never hinged condition with excellent centering and fresh original gum, these examples capture a transitional era in Chinese postal history. Estimate "$85 – 100".