China. (Russian Post Office in China). 1903. Envelope headed 'The Trading Company/ The Successor to Alexis Goobhin, A. Roasnetzoff & Co. Hankow' (oval firms chop in blue on reverse) addressed to Austria cancelled by 'Imperial Chinese Post, Hankow' date stamp '16th April 03', routed via the Russian Post Office bearing Russian China SG 6, 10k blue tied by Shanghai Post Office double ring, endorsed "via Dalny" with Imperial and Russian Post Office Shanghai on reverse, with Manchuria 'Post Wagon and Wien, Austria arrival '15th May' in blue.
A few mixed covers are known cancelled franked with Russian China adhesives but forwarded from Hankow to Shanghai by the Chinese Imperial Post and delivered by the Imperial Post to the Russian Post Office for cancelling and forwarding.