1928 (4 Aug.) cover (address partially excised) registered from Ulan Bator to Kharbin bearing 1926 20m., 1926-27 5m., 10m., 25m., 40m. and 50m., all tied by c.d.s. and with violet framed registration h.s. adjacent, reverse showing Chinese Postage Due 4c. (2) and 20c. block of four cancelled by "HARBIN" bilingual c.d.s.