SC Plate 4 1d. black, Re-entry, S.G.AS23a,

used on a small envelope from Guernsey to Thornbury 18 September 1840, good margins, tied by a rich bright red Maltese Cross cancellation, Guernsey date stamp of despatch on the reverse and Bristol code 'A' transit mark 21 September, small cover tear at the right; fine. A RARE CHANNEL ISLANDS USAGE. (S.G. £600+)