1851, 0, 6 kreuzer blue, type IIIb, wide to having huge margins, horizontal pair with 7 mm margin of sheet right, effectively plate flaw \"notch in the left margin by of the right stamp\", cancelled by single circle postmark \"WAGRAM 31 / 10\", superb in every respect (choice copy), photo expertize Dr. Ferchenbauer V+?B \"untreated and especially effective, exquisite item. \", Ferchenbauer RR! / collector's price!