5/- grey & yellow-orange John Ash Imprint block of 4 with Open-Mouth Kangaroo Pos [R55] ACSC 46za, exceptional centring for an imprint piece, the upper units are lightly mounted, the lower units are unmounted, Cat $5500+ for mounted. Superb. [Better centred than either of Stuart Hardy's similar blocks that sold for $2679 each]

Grade A+ B1 (Image1)

Estimate AU$2,000

10/- grey & pink John Ash Imprint block of 4 with Open-Mouth Kangaroo Pos [R55] ACSC 50za, the lower right unit very lightly mounted, the other three units are unmounted, Cat $10,000+ for mounted.

Grade A C1 (Image1)

Estimate AU$2,500

10/- dark grey & aniline pink ACSC 50E (SG 136var) marginal block of 4 from the right of the left-hand pane, the lower units better centred, unmounted, Cat $11,000+ for mounted singles: unpriced unmounted. A rare block.

Grade A (Image1)

Estimate AU$5,000

10/- grey & pink John Ash Imprint block of 4 ACSC 50Aza with Pos [R55] Open-Mouthed Kangaroo ACSC 50(V)vb, some very minor gum-aging towards the top, mounted on the upper units and in the margin, the lower units are unmounted, Cat $10,000+ for a mounted block of 4. Ex Lord Cornwallis, 'Besancon' Part III and 'Artemis': sold for $2635.

Grade A-/A (Image1)

Estimate AU$1,500

£1 grey ACSC 54 (SG 137) block of 4, two nibbled perforations at the base, central 'AIR MAIL/ 12MY36/CANBERRA FCT' cds, Cat $1800+ (£1200+), for singles. A very rare and desirable postally used multiple. Ex 'Goldmine' (sold for $1250) and 'Artemis' sold at our auction of 1.12.2021 for $1710.

Grade A/A- (Image1)

Estimate AU$1,500

£1 grey John Ash Imprint block of 4 with Retouched Lower Frames Pos [L60 & R55] ACSC 54z, minor bends at lower left that intrude on the lower left unit, the left-hand units with some very minor gum aging, the upper units very lightly mounted, the lower units are unmounted, Cat $17,500+ for mounted. Rare. The ACSC states "there are probably not more than a dozen imprint blocks of 4". We are confident that the £1 imprint block is scarcer than its more highly regarded £2 sibling.

Grade A/B (Image1)

Estimate AU$5,000

£2 black & rose-carmine John Ash Imprint Pair with Open-Mouth Kangaroo ACSC 58za, quite well centred for an imprint piece, faint aging, very lightly mounted across the gutter, Cat $25,000.

Grade A- B1 (Image1)

Estimate AU$10,000