[ William Ewart Gladstone, Liberal Prime Minister. ] Autograph Signature ('W E Gladstone') on frank to Colvile

On 7.5 x 11.5 cm. panel cut from front of envelope. In fair condition, lightly-aged. All in Gladstone's hand, it reads 'Fettercairn Septr. twentynine 1839 | A. Colvile Esq | Craigflower | Dunfermline | W E Gladstone'. Gladstone's signature is in the bottom left-hand corner, but is merely underlined, rather than being between two horizontal lines, as customary when franking.