cover 1916 "red band" envelopes (4) from Kulun bearing "Junk" - issue frankings comprising 6d.; 3c. (3) to Kalgan 1c. + 5c.; 3c. block of four (double letter rate) to Peking cancelled by bilingual "URGA" c.d.s. (Type 4B) with various transit/arrival h.s.