Watermark Horizontal 2/6d black & brown SG O1, very well-centred, small hinge remainder, large-part original gum, Cat £1200. [After October 1910, the Postal Regulations permitting the sale of Official stamps to the public required them to be datestamped].

Grade A- A1 (Image1)

Estimate AU$500

Watermark Horizontal 2/6d black & brown SG O1 block of 6 from the lower-right corner of the sheet with printer's guide-marks in the lower margin, CTO with 'PORT MORESBY' cds, no gum, Cat £240+ for singles.

Grade A B1 (Image1)

Estimate AU$100

Watermark Vertical on Thin Paper 2/6d black & brown SG O2a, quite well-centred, lightly mounted, large-part original gum, Cat £1700. [After October 1910, the Postal Regulations permitting the sale of Official stamps to the public required them to be datestamped].

Grade A B1 (Image1)

Estimate AU$800