135067 1862 'GENERAL POST OFFICE' NOTICE ANNOUNCING ISSUE 3D SMALL UNCOLOURED CORNER LETTERS (SG75-77).

1862 'GENERAL POST OFFICE' NOTICE ANNOUNCING ISSUE 3D SMALL UNCOLOURED CORNER LETTERS (SG75-77). A rare General Post Office notice, 155 x 212, faults include tone spots and some creasing, with 3d bright carmine-rose (SG76) lettered AD and overprinted 'SPECIMEN'. Stamp with corner fault but a very rare notice with few having survived. (Ref 135067).