cover 1864 (15 Dec.) opened-out envelope to Bombay bearing, on reverse, 1862 no watermark 2c. brown (14) comprising two blocks of four, a strip of five and a single (a few perforation faults, mostly of a trivial nature), each cancelled "B62" in blue with accompanying despatch c.d.s. alongside. A remarkable and spectacular exhibition item of the highest calibre. Photo