This complete mint never hinged set from 1917 represents the final issue of the Russian Imperial Post Office in China, featuring the iconic double-headed Russian imperial eagle overprinted on the definitive stamps of Russia for use in Chinese treaty port post offices. The set includes denominations from 2 Chinese cents to 1 Chinese dollar, encompassing thirteen values that were adapted from the 1889–1906 Russian coat of arms series. Each stamp was typographically printed, generally with comb perforation 14¼ x 14¾, and bears distinctive surcharges in Chinese currency alongside the bold imperial eagle emblem. These issues were released for postal operations in Russian-administered zones such as Harbin, Shanghai, and Tientsin, serving a large Russian expatriate and merchant population during a time of geopolitical instability marked by the fall of the Romanov dynasty. Catalogued as Scott CH 51–63, the set reflects the final expression of tsarist influence in East Asia before the Bolshevik Revolution led to the collapse of imperial foreign postal services. The design is both heraldic and historical, emphasizing continuity of empire at a moment of impending upheaval. Condition Mint never hinged, very fine throughout with fresh gum and strong color, exceptional completeness. Estimate "$220 – 260".