2/- brown with the Watermark Inverted ACSC 37a (SG 41w), quite well centred, light diagonal crease at top which does not detract from the very fine facial appearance, light Brisbane 1917 cds in blue, Cat $2250 (£425).

Grade B B2 (Image1)

Estimate AU$150

10/- grey &aniline pink ACSC 48E (SG 43b), lightly mounted, Cat $850 (£600).

Grade A C1 (Image1)

Estimate AU$250

10/- grey & deep aniline pink with the Watermark Inverted ACSC 48a (SG 43aw), well centred, a few nibbled perfs hardly detract from the very fine appearance, superb 'REGIST[ERED]/SYDN[EY NSW]' cds, Cat $3750 (£1600).

Grade A- B2 (Image1)

Estimate AU$1,000

£1 brown & blue ACSC 52 (SG 44), well centred, a couple of nibbled perfs, lightly cancelled, Cat $2500 (£1600).

Grade A- B2 (Image1)

Estimate AU$750

£2 purple-black & rose-carmine ACSC 56C (SG 45b), a couple of slightly pulled perfs at the base, Cat $6500 (£4500).

Grade A- C2 (Image1)

Estimate AU$2,250

£2 purple-black & carmine-rose ACSC 56C (SG 45b) block of 4, attractive centring, very lightly mounted, Cat $30,000+ (£18,000+) for singles. A rare & superb showpiece.

Grade A+ B1 (Image1)

Estimate AU$20,000

PUNCTURED 'OS': 3d olive Die I ACSC 13Eb (SG O45) block of 6 (3x2), very well-centred, the lower-right unit with two short perfs & the upper-right unit with a tiny black mark on the gum, the upper-left unit with a small hinge remainder, the others all very fine unmounted, Cat $2550+ for one mounted & five unmounted singles (£420+ for six mounted singles). A very scarce multiple.

Grade A/B (Image1)

Estimate AU$600

PUNCTURED 'OS': 6d pale ultramarine Die IIB ACSC 20Cb (SG O46d) horizontal pair, well-above average centring, lightly mounted, the lower unit with tiny hinge remainder, Cat $750+ (£340+) for two singles.

Grade A A1 (Image1)

Estimate AU$200

PUNCTURED 'OS': 9d indigo-violet Die IIB ACSC 27G, a few irregular perfs, Cat $4500. Chris Ceremuga Certificate (2011) states 'indigo-violet' but as the then ACSC 27C.

Grade A- B2 (Image1)

Estimate AU$1,500