cover 1920 (c.) native envelope bearing, on reverse, Dull ink t. green cancelled by "LHASSA PO" native bilingual c.d.s. and India ½a. tied by "GYANTSE/TIBET" c.d.s., between adhesives is a small photo of a monk (possibly the sender); minor faults; 1925 envelope from Calcutta to Gyantse bearing India 1a. cancelled by despatch c.d.s. and Dull ink t. green cancelled by Indian type "GYANTSE/TIBET" double ring d.s. and 1927 envelope to Katmandu bearing Shiny ink t. olive-green with illegible cancellation and India 1a. tied by "PHARIJONG" c.d.s. with arrival h.s. adjacent. An interesting trio