Great Britain 1840 1d black Plate 7 cover, SG2Great Britain 1840 1d black Plate 7 cover, SG2. A very fine used four margin example lettered 'KK' neatly tied to a clean fresh entire envelope by a red Maltese Cross and clearly showing evidence of re entry at base and top right. It was sent locally within Cambridge and backstamped for 'NO. 30. 1840'. A most attractive penny black cover. The re entry is the result of wearing and damage to the printing plate resulting in a need to strengthen the worn