1875 MOURNING ENVELOPE REGISTERED MAIL LONDON TO MARLBOROUGH WITH 1D PL.138 (SG43) X FIVE. Fine mourning envelope sent registered mail London to Marlborough, Wilts with 1d pl.138 (SG43) x 5 lettered AD AE BD BE BF tied 'R' handstamps. On reverse 'MARLBOROUGH' date stamp AU 11 75. Fine mourning usage. (Ref 141516).