1946 Oct. 8 London, England, airmail to Shanghai with $600 postage due affixed Oct. 18 upon arrival. An excellent example of this postage due stamp used on cover. (2 images)

1946 Oct. 8 London, England, airmail to Shanghai with $600 postage due affixed Oct. 18 upon arrival. An excellent example of this postage due stamp used on cover. (2 images)