Hong Kong Treaty Ports Canton 1922 (5 May) envelope from the American Consulate, registered to Washington bearing "<H>china" 4c. pair, 10c. and 20c. tied by type Eii c.d.s. with a good strike of the boxed registered handstamp; slightly reduced at left and a few age marks; with two large wax seals on the reverse along with the arrival c.d.s. (6.6). Photo