Offices in China, 1919, 40¢ on 20¢ deep ultramarine, right margin plate "6935" block of 6, o.g., bottom right stamp lightly hinged, others never hinged, bright color, small corner crease in selvage, otherwise Fine. Scott No. K13  $1,630 for singles. $0 (Image)

Offices in China, 1919, 40¢ on 20¢ deep ultramarine, top margin plate "6938" block of 6, o.g., bottom stamps never hinged, bright color, about Fine. Scott No. K13  $1,300. $0 (Image)

Offices in China, 1919, 40¢ on 20¢ deep ultramarine, bottom margin plate "6938" block of 6, interleaving adherence at top, part o.g. at bottom, fresh with bright vibrant color, Fine. Scott No. K13  $1,300 for o.g. $0 (Image)