1912: Cover with 1900/10 CIP ½ c. brown, 2 c. deep green and 3 c. blue-green with Republic of China diagonal overprints in black applied locally in Hwangtu (Chan RLKB.1A.2-4) tied by "Hwangtu" cds's (July 19) with Shanghai cds on reverse (July 17). Scarce.