
MONGOLIA: Registered envelope from Ulanbator to Tienstsin with red encircled 'T' franked on reverse 1926 fiscals 20c brown (2) + 5c purple (2) hs black boxed 'POSTAGE' (SG10B + 12B) tied by violet Ulan Bator cds's, taxed on arrival with Chinese postage dues marginal 4c blue (2 pairs + single tied by Tientsin cds's