Offices in China, 1919, $1 on 50¢ light violet, block of four with left plate number "7040", bright color, o.g., hinged in selvage only, stamps are never hinged, fresh and Fine. Scott No. K15  $5,200 as singles. $0 (Image)

Offices in China, 1919, $1 on 50¢ light violet, right margin block of four with plate number "7049", unusually deep and intense color, o.g., lightly hinged at top, bottom pair never hinged, light wrinkle in lower left, Fine, very few pieces with plate number are known to exist. Scott No. K15  $3,750 for singles. $0 (Image)