1877 New South Wales, 8d Yellow diadem stamp, perforated 13 on first Crown/NSW watermark paper. SG218.  CV $30.  

The stamp is in good condition with a bright printing impression, good perfs (one side trimmed) and well centred.  Lovely 4-oval NSW cancellation. See first scan. 

The back of the stamp as per the second scan. Shows very clean, sound white paper, no faults. The stamp is from the top edge of the sheet, and shows part of the makers watermark.