U5 1922 (15 July) "CHINA" 10c. registered U5 (size H, creases) to London, bearing "CHINA" 1c., 4c., 10c. and 20c., all cancelled by "BRITISH POST OFFICE/SWATOW" c.d.s. and showing very rare "SWATOW B.P.O." registration h.s. A most attractive franking. Photo