1934 Altanbulak (25 Apr) to Kalgan. Red band cover, f.w. pictorial issue 10m x3, tied by Altanbulak cds. Transit Vladivostok (21 Aug),
1934 Altanbulak (25 Apr) to Kalgan. Red band cover, f.w. pictorial issue 10m x3, tied by Altanbulak cds. Transit Vladivostok (21 Aug), Shanghai (31 May). Showing "Postal Service Suspended" Chineses vertical h.s. In combinaiton with ROC postage due 10c x5 on reverse, tied by Kalgan (14 Sep) arrival cds. This cover took the long route of Vladivostok because the Japanese interrupted the rail transit via Manchukuo. Almost 5 months were spent for the whole journey. Illustration fig. 163, p. 228 in "The Postal History of Mongolia 1841-1941" by W C Hellrigl. Cover opened out for display.1934.4.25 阿勒坦布拉格經海參崴寄張家口。紅條封,貼蒙古革命票10m x3,銷阿勒坦布拉格日戳。8.21經海參崴,5.31經上海。正面蓋有“郵政停”直戳。加貼民國欠資票1角x5,銷9.14張家口到達戳。此封因滿洲國而需繞道海參崴,總共歷時近五個月。Hellrigl著《The Postal History of Mongolia 1841-1941》第315頁圖230原件。封剖開以作展示。