New South Wales - Official stamps. 1882-85, black ''O S'' overprint on Queen Victoria 2p blue, perforation 11x12, watermark Large Crown and NSW, block of four with a gap of horizontal perforation, bottom right stamp with 8.5mm instead of 7mm space between ''O'' and ''S'' (position R.4/4), large part of OG, previously hinged, VF and rare multiple, NPC certificate, SG #O21c, Est. $400-$500 (Image)

New South Wales - Official stamps. 1895, Special Printing of red ''O S'' overprint (type II, space 5.5mm) on 3c green, perforation 10, inverted watermark Large Crown and NSW, neat three-oval cancel ''NSW'' at top right, F/VF and very rare, only 1000 stamps were prepared, 900 cancelled with NSW, of which only 158 stamps were sold and others destroyed, K. Ceremuga certificate, SG #O24 var, Est. $500-$600 (Image)