1840 (Aug 12) 1d Mulready envelope, stereo A139, addressed in the hand of Sir Rowland Hill marked private to “Mr M.B. Peacock General Post office” (the solicitor to the Post Office) and signed at lower left “R Hill” neatly cancelled by a good strike of the red Maltese cross, the reverse showing dispatch and delivery ds for Au. 12 and 13 1840, very fine and rare being one of four known, one of which is in the Royal Philatelic collection, also including a very fine Carte de Visit of Rowland hill seated at his desk; cert Karl Louis (2016) erroneously stating three examples known. A major exhibition frontispiece.