Great Britain offices in China 1918, Hong Kong, cover to Calcutta with India WW1 censor franked with 10c.Hong Kong King George V Overprinted (SG 23; Mi. 22; Scott 6) tied by 'Shanghai / May 29/ 1918' cds. Nice transit markings on reverse.
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Hong Kong 1905 to London. Scarce Treaty Port usage (Shanghai BPO) tying 4c. King Edward VII (SG 78 ; Yt. 78) Ship mail per SS Malta. Some pencil marks on front, Official seal and London arrival cds on back.
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