1 / 2 Dollar on 1 Mark, war time printing, 25 : 17 perforation holes, overprinted value middle, counter sheet of 20 each values with house order number H 5484.18 and mirror-inverted plate number 30 at the lower margin, field 18 with overprint flaw I, margin of sheet left perforations going through margins, right not perforated throughout, mint never hinged, two rest of hinges in the margin of sheet