O 1/JO 11" squared-circle d.s., showing Bombay (transit) and arrival c.d.s. on reverse. A rare double rate letter. Photo" /> cover 1887 (11 June) envelope (minor damage) to Scotland bearing 1a. (9) each cancelled by a strike of the "BURMESE FIELD/SUB. P.O./N<V>O 1/JO 11" squared-circle d.s., showing Bombay (transit) and arrival c.d.s. on reverse. A rare double rate letter. Photo | Christie's