cover 1860-80 (c.) internal unpaid or insufficiently paid envelopes (15) showing many different h.s. including "BOMBAY Bearing 1.A." d.s. (three types), "POSTAGE DUE", "UNPAID", triangular d.s. and rate h.s. including scarce framed "4 ANNA", also 1880 (c.) ½a. envelope showing yellow Post Office publicity label in Gujerati; a few faults or defects