1844 & 1851 Two letters (no covers) written in French by a French Missionary (who will later be Bishop) from Sy-Tchuen, Mongolia to France, tears and stained but rare early letters from Mongolia (Image)

1858 Letter (no cover) written in French by a Bishop from Mongolia to France and commenting the new Treaty allowing the Catholic Missions in China, a fantastic Missionary letter (Image)

1922 Native red band cover franked China 6c black grey bearing URGA cds, very fine (Image)

1927 Native red band cover via Tchita to China bearing 1926-27 25m cancelled by Ulan Bator 30.6.27 double ring c.d.s. and at front and back China 1923-33 1c (2) and 4c (2) cancelled MANCHULI, some imperfections but scarce (Image)

1928 Native red band cover via Kalgan & Harbin to China bearing 1926-27 25m cancelled by Ulan Bator 21.11.28 double ring c.d.s. and at front China 1923-33 4c cancelled indistict killer type cancel, fine to v.fine, scarce (Image)

1934 Native red band cover via Kalgan to Shanghai bearing 1932 definitives 10m + 20M cancelled by Ulan Bator 24.7.34 double ring c.d.s. and at front & back China postage due 1932 issue 5c orange (11) cancelled Kalgan,one or two adhesives witlh perf fault, fine & rare combination, scarce (Image)