This group of 15 stamps features a range of Chinese and Japanese Manchukuo definitives overprinted with the four-character inscription 中華郵政 ("Chinese Post") in soft black ink, attributed to the short-lived local post at Tsai Kia Kow (also referred to as Jiajigou) in Manchuria, during the chaotic transition after Japan’s 1945 surrender. The overprint marks the resumption of Chinese postal authority in the region and was likely applied hastily and unofficially. Referenced in Kerr as #233 and partially listed in Scott as M247, though many values here—including higher denominations such as the 40f black-on-gray and 30f red-on-pink—are unlisted and undocumented in major catalogs. Chan reportedly identifies 24 values in total; the 15 examples presented here reflect considerable variety and represent a near half-set. Lithographed with varied perforation and gumming, the stamps originate from prewar Manchukuo issues reused with a bold nationalist overprint. Back side analysis reveals full original gum on most stamps, a mix of MNH and lightly hinged, with some toning and light bends. Culturally and historically significant, these stamps embody post-war instability, regional identity, and the swift reassertion of Chinese sovereignty. Estimate "$340 – 400"