2d Grey with Wmk inverted BW #7a, one toned perf, Cat $225. (Image1)

Estimate AU$70

2d Grey perf 'OS' Wmk inverted, BW #7a,ba, Cat $400. (Image1)

Estimate AU$40

2d Grey with Substituted cliché (Die IIA) [1L55] perf 'OS', BW #7b(1)kb, datestamp cancel, Cat $4,500 (including premium as a perf 'OS' variety). (Image1)

Estimate AU$300

2d Grey Die IIA with Wmk inverted, BW #8a, with part cds 'LAT[E FEE]/415P16S[E18]/ADELA[IDE RLY]', Cat $12,500 (SG #35daw, Cat £10,000). A very rare stamp, BW notes only four used examples recorded, it has not been represented in most major collections. This is believed to be the original example recorded. A similar stamp realised $13,397 in the May 2013 Hardy auction. The owner has plated the stamp at 3L14. (Image1)

Estimate AU$6,000

2½d Indigo selection of unplated varieties (mint x5, used x1), including Heavy coastline to WA mint pair. (Image1)

Estimate AU$150

2½d Blue with JBC Monogram single in block of 4, BW #11(1)zc, tiny gum blemish on mongram unit, Cat $1,250++. (Image1)

Estimate AU$600

2½d Indigo with Retouched to first A of AUSTRALIA (& heavy coastline of WA) x4, BW #11(2)l, Cat $600. (Image1)

Estimate AU$150

2½d Blue with JBC monogram single, BW #11(2)zc, lightly hinged, some missing perfs, Cat $1,250. (Image1)

Estimate AU$575

3d Olive-Green Die II Perf 'OS' well centred with gum, BW #13ba, hinge remains, Cat $750. (Image1)

Estimate AU$150

6d Blue Die II shades three examples one with marginal jubilee line, BW #19, Cat $675. (3) (Image1)

Estimate AU$120

6d Blue Die II shade set, odd small fault, generally good condition, Cat $430 (7) (Image1)

Estimate AU$40

6d Dull Grey-Blue Die II perf 'OS', BW #19Eba, fine MLH, Cat $1,250 for non-OS shade. (Image1)

Estimate AU$190

6d Dull Grey-Blue Die II perf 'OS', BW #19Eba, fine MLH, Cat $1,250 for non-OS shade. (Image1)

Estimate AU$190

6d Dull Greyish Violet Die II BW #19G, MLH, Cat $575. National Philatelic Centre certificate (2021). (Image1)

Estimate AU$150

6d Blue Die II with Wmk inverted perf 'OS/NSW' x10, BW #19a, sound used, mostly reasonably to well centred examples with CDS; an extraordinary array, Cat $2,750. (10) (Image1)

Estimate AU$700

6d Ultramarine Die II with Wmk inverted, BW #19a. Starling certificate (2020). (Image1)

Estimate AU$150

6d Blue Die IIB scarce solo franking tied by Moora (WA) cds to 1921 (Dec 7) commercial cover to USA [3d letter rate x2.], with red & black provisional registration label (similar to W15 but with 'R.6.' well above top frame line), Cat $500 (on cover). (Image1)

Estimate AU$100

6d Pale Ultramarine Die IIB scarce solo franking, tied by Sydney machine cancel to 1922 (Aug 9) commercial cover to USA [3d letter rate x2], Cat $500 (on cover). (Image1)

Estimate AU$80

6d Ultramarne Die IIB Perf 'OS' variety Broken leg on kangaroo [3L6], BW #20b(3)d being the left-hand unit of a gutter pair, varietal unit MUH, Cat $2,750++. (Image1)

Estimate AU$800

6d Chestnut Die IIB BW #21 solo franking on 1924 (Apr 4) Horsham (Vic) registered cover to Germany, red V2B registration label, Cat $250 (on cover). (Image1)

Estimate AU$70

9d Violet Die II with Wmk inverted, BW #26a. Starling certificate (2020). (Image1)

Estimate AU$200

9d Violet Die II with White flaw under TA of POSTAGE [1L58], BW #26(1)d, fresh mint, Cat $250. (Image1)

Estimate AU$75

9d Violet Die II JBC Monogram single, BW #26(2)zc, fresh MLH, Cat $3,000. (Image1)

Estimate AU$1,500

9d Violet Die IIB with Wmk Inverted [pos 54], BW #27a, MLH, Cat $475. (Image1)

Estimate AU$75

9d Violet Die IIB perf 'OS' block of 4, BW #27ba, light storage-related toning, MUH, Cat $2,300+. (Image1)

Estimate AU$230