IK Plate 2 1d. black, Without the ray flaw, S.G.AS15f,

used on an entire letter from Dumbarton to Edinburgh 1 September 1840, clear to good margins, tied by a red Maltese Cross cancellation, framed Dumbarton date stamp of despatch on the reverse and Edinburgh code 'Z M' arrival the following day; very fine. (S.G. £550+)