This postal cover from Korea, then under Japanese rule, features the 1.5 sen pale blue definitive stamp from the 1913 Tazawa series. Issued on August 31, 1913, and printed typographically without watermark, the stamp bears the imperial chrysanthemum crest and floral scrollwork framing the denomination, symbolizing imperial authority and modern governance. The cover is likely commercial in origin and represents early usage of the new Taishō-period series in colonial Korea, with clear postal transit markings and Japanese kanji inscriptions. The stamp is catalogued as Michel JP 101, Scott JP 117, Yvert et Tellier JP 119, Stanley Gibbons JP 158, and Sakura JP 133. It remains in very fine condition with legible cancel, clean envelope surfaces, and historically rich context tied to Japan’s imperial postal network in the Korean peninsula. Estimate "$80 – 100"