cover 10c. on 25c. blue block of four (top left stamp has small tear) variety surcharge "10 CENTS" double on 1920 (6 Mar.) local Peking cover. Rare. Photo
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cover 10c. on 25c. blue block of four (top left stamp has small tear) variety surcharge "10 CENTS" double on 1920 (6 Mar.) local Peking cover. Rare. Photo
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