Offices in China, 1919, 12¢ on 6¢ red orange, o.g., never hinged, virtually perfect centering amid wide margins, fresh with bright vivid color, Extremely Fine and choice, a lovely mint gem. Scott No. K6  $220. $0 (Image)

Offices in China, 1919, 12¢ on 6¢ red orange, block of four with right plate number 13373, strong color, o.g., stamps never hinged, hinge remnant in selvage, Fine. Scott No. K6  $880. $0 (Image)

Offices in China, 1919, 12¢ on 6¢ red orange, bottom plate number 7822 block of six, o.g., hinged at top center only, rest never hinged, Fine. Scott No. K6  $800. $0 (Image)