25 Pfg Vienna spring fair with variety I "traces of an others stamp design" decorative on the adhesive right margin of sheet turning into, in the horizontal pair with normal stamp, in perfect condition mint never hinged, unsigned, in the margin of sheet manufactured clamp hole from the stapling of the sheet parcel, superb in every respect (choice copy), photo expertize Dr. Oechsner BPP (2015) for former block of four, Michel 550.-