1941, 24 K. Post office clerk, proof in yellow ochre, unperforated from of the right upper corner of the sheet, with small spots in the colour black lilac, in that the 50 K. Of this issue printed was, mint never hinged, in the upper margin rest of hinge, very rare, photo expertize Zrinjscak HFS. ; (7 % import duty will be charged on the hammer price, if this lots is shipped within the EC or the UK).