1850 / 54, 2 kreuzer black, machine paper, type IIIb, from left margin of sheet 7 mm, having bright colours and having full margins extremely fine copy as a single franking on local letter with single circle postmark \"Vienna 1 / 6 1855 2. EXP\", reverse black seal, photo expertize Prof. Dr. Ulrich Ferchenbauer VOeB (2021) : \"a especially fresh and attractive exquisite item! \"