cover -- 1918 (22 Nov.) commercially used as an envelope from Yochow to Shanghai, cancelled by bilingual despatch c.d.s. and showing Hankow and Shanghai backstamps. Early use, possibly the earliest known date. Photo
cover -- 1918 (22 Nov.) commercially used as an envelope from Yochow to Shanghai, cancelled by bilingual despatch c.d.s. and showing Hankow and Shanghai backstamps. Early use, possibly the earliest known date. Photo

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cover -- 1918 (22 Nov.) commercially used as an envelope from Yochow to Shanghai, cancelled by bilingual despatch c.d.s. and showing Hankow and Shanghai backstamps. Early use, possibly the earliest known date. Photo