1½d brown mint blocks including Plate 1 Imprint block of 8 ACSC #94(1)za, Plate 3 Imprint block of 8 #94(3)za, Plate 3 Imprint in block of 14, block of 6 with Thick '1' Re-Entry #94(3)h, Cat $650+. (Qty 8 items) (Image1)

Estimate AU$200

OVERPRINTED 'OS': ½d Electro 9 complete sheet, CTO with ADELAIDE cds including Hollow 'S' variety, Ash Imprint and listed varieties, full unmounted o.g.

Grade A (Image1)

Estimate AU$400

OVERPRINTED 'O S': 1d green with the Watermark Inverted ACSC #82(OS)a (SG O129w), excellent centring, lightly mounted, Cat $2500 (£1300). Chris Ceremuga Certificate (2004). [Better centred than Arthur Gray's example - with one pulled perf - that sold at our auction of 30.10.2015 for $1025]

Grade A A1 (Image1)

Estimate AU$750

OVERPRINTED 'O S': 1d green with the Watermark Reversed ACSC #82(OS)aa (SG O129x),unmounted, Cat $4500+ (£2250+) for mounted. Michael Drury Certificate (2012). [Far superior to Arthur Gray's mounted example - more off centre, with blemishes on the reverse - that sold at our auction of 30.10.2015 for $2297]

Grade A C1 (Image1)

Estimate AU$2,000