Details
cover 1851 (July) small envelope (opened out) registered to Madras showing, on reverse, thimble type circular-framed "CALCUTTA/I.D./G.P.O." (HG G17) alongside "CALCUTTA/WEIGHT TOLA/PAID" (HG 27) and G.P.O. d.s., all three in red, and framed "A M"; one of two recorded examples of this rare h.s. Photo
Further details
Note: It is unclear what the letters "I.D." stand for in the above handstamp. A similar handstamp with the letters "E.D." in the centre has been found and it has been suggested that these letters may stand for Inland Despatch and External Despatch respectively