6d Chestnut Overprinted 'OS' with Ash ('N' over 'N') imprint block of 4, BW #22(OS)3z, upper-right unit rounded corner, MUH, Cat $1,200 as hinged. (Image1)

Estimate AU$400

2/- Maroon BW #39, fine MUH, Cat $750. (Image1)

Estimate AU$190

5/- Grey & Yellow perf ''OS' BW #45ba plus 2/- Maroon perf ''OS' BW #39b pair tied to small piece by 'DARWIN N.T./6MR34/AUSTRALIA' datestamps; 5/- unpriced on cover, 2/- Cat $600 on cover. (Image1)

Estimate AU$180

5/- Grey & Yellow-Orange BW $45Aw CTO, Cat $250. Drury certificate (2018). (Image1)

Estimate AU$100

5/- Grey & Yellow-Orange perf ''OS' with CTO cancel and full gum, BW #45wb, off centre to top left, Cat $250+. (Image1)

Estimate AU$55

5/- Grey & Yellow with duty plate variety Break in right frame opposite Cape York and two yellow spots on map west of Spencer's Gulf, with vignette plate variety Flaw in kangaroo's tail - corrected [R44] BW #45(D)ua, repaired corner perf at lower right, CTO with full lightly mounted gum, Cat $400. (Image1)

Estimate AU$150

10/- Grey & Pale Pink optd 'SPECIMEN' Type C, BW #49x, fine MVLH, Cat $475. (Image1)

Estimate AU$100

£2 Grey & Rose-Crimson BW #57, centred to upper left, corner fault upper right. (Image1)

Estimate AU$150