6d ultramarine ACSC 18 marginal block of 4 from the top of the sheet, unmounted, Cat $9000+. A rare multiple.

Grade A C1 (Image1)

Estimate AU$2,000

9d violet ACSC 25 marginal block of 4 from the right of the left-hand pane, hinge remainder on the upper units, the lower units are superb unmounted, Cat $5700+.

Grade A-/A+ (Image1)

Estimate AU$1,000

9d violet ACSC 25 marginal block of 4 from the top of the sheet, light bend affects the right-hand units, unmounted, Cat $10,000+. A rare multiple.

Grade A/A- (Image1)

Estimate AU$1,500

9d violet with the Watermark Inverted ACSC 25a (SG 27w), well centred, indistinct but decipherable 'ROMA/ AP21/1917/ QUEENSLAND' postal cds, faint stain at the top, Cat $5000 (£1800). [The ACSC states about two dozen used examples are recorded, of which "about half have non-postal markings". This is apparently the first example recorded from Roma]

Grade A B1 (Image1)

Estimate AU$1,000

1/- bright blue-green ACSC 31B block of 4, very fresh, unmounted, Cat $10,000+.

Grade A C1 (Image1)

Estimate AU$2,000

1/- deep blue-green ('aniline') ACSC 31E, excellent centring, Cat $4000. Michael Drury Certificate (2018).

Grade A A1 (Image1)

Estimate AU$1,400

2/- brown on Thin Paper ACSC 36a, Cat $4500. Chris Ceremuga Certificate (2006). [The ACSC catalogue value is in the 'unmounted' column, in error]

Grade A C1 (Image1)

Estimate AU$1,000

5/- grey & chrome-yellow ACSC 43B, exceptional centring, very lightly mounted, Cat $1500.

Grade A A1 (Image1)

Estimate AU$600

5/- grey & chrome-yellow with the Watermark Inverted ACSC 43Ba block of 4 [R53-54/59-60] the lower units - "jumbo" stamps - with varieties Break in Gulf of Carpentaria and Short Spencer Gulf #43(D)va & j, rich colour, characteristic rough perfs, Cat $9800+.

Grade B2 (Image1)

Estimate AU$3,000

PUNCTURED 'OS': 5/- grey & chrome-yellow with Major Double Print of the Frame ACSC 43bc, characteristic irregular perfs, Melbourne ' 11 ' cds largely clear of the most prominent doubling, Cat $9000. Chris Ceremuga Certificate (2017) states "...second impression very irregular and shifted 7.5mm downwards..." [an odd comment considering that the doubling appears identical to the example illustrated in the ACSC] and "extremely rare with only several recorded". [The ACSC states "...there are four examples punctured small OS, a used pair cancelled at Melbourne & two singles in the Royal Collection" This example is thus only the third 'OS' example in private hands]

Grade A B2 (Image1)

Estimate AU$3,000