Austria 1854, 9k blue. Four margin single on cover front, with dramatic error of missing "9" and part of ornamental arms either in a pre-printing fold or surface obstruction on the plate, postmarked with fancy "N.Tapolcsán 21/9" handstamp, straight line "München 25 Sep.1854" receiver on reverse; rare and possibly unique, Fine. Scott No. 5  Estimate $400 - 600. $0 (Image)