1877, 12 Sk. Posthorn yellow green, horizontal block of eight with right upper corner of the sheet, mint never hinged, unsigned, well perforated and centered, the left upper stamp on face slightly spotted and left in the perforation minimal separated, hinge trace in the margin extraneous, it is the largest known unit of this stamp in mint never hinged condition, with the generous corner of the sheet especially decorative and exhibit for the large Norway collection