Offices in China, 1919, 30¢ on 15¢ gray, bottom margin plate "7928" block of 6, o.g., hinge remnants, center stamps never hinged, rich color, fresh and Fine. Scott No. K12  $1,150. $0 (Image)

Offices in China, 1919, 30¢ on 15¢ gray, right margin plate "7929" block of 6, o.g., never hinged, strong color, hint of toning, otherwise Fine. Scott No. K12  $2,000. $0 (Image)

Offices in China, 1919, 30¢ on 15¢ gray, top margin plate "12590" block of 6, o.g., bottom center stamp hinged, others never hinged, rich color, natural paper inclusion in top left stamp visible only on reverse, Fine. Scott No. K12  $1,150. $0 (Image)

Offices in China, 1919, 30¢ on 15¢ gray, left margin plate "7928" block of 6, o.g., center stamps never hinged, rich color, gum wrinkle in bottom left stamp, otherwise about Fine. Scott No. K12  $1,150. $0 (Image)

Offices in China, 1919, 30¢ on 15¢ gray, bottom margin plate block of 6 with plate number 7926, o.g., four stamps h.r., center vertical pair n.h., Very Fine and attractive. Scott No. K12  $1,150. $0 (Image)