10/-, £1 & £2 pairs, all with 'Specimen' type A handstamps, BW #47x,51x,55x, MLH. All multiples are rare and a set in pairs is particularly difficult. (3 prs) (Image1)

Estimate AU$4,000

10/-, £1 & £2, all with 'Specimen' type A handstamps, BW #47x,51x,55x, 10/- [R47], £1 [L20], MLH, Cat $2,550. (3) (Image1)

Estimate AU$800

£2 Black & Rose, BW #55, fresh MVLH, Cat $12,500. (Image1)

Estimate AU$4,000

£2 Black & Rose Sperati Forgery, signed "Jean de Sperati" in pencil on reverse, BW #55c, Hobart machine cancel, Cat $7,500. Ceremuga Certificate (2012). (Image1)

Estimate AU$5,000

£2 Black & Rose Sperati Forgery, signed "Jean de Sperati" in pencil on reverse, BW #55c, NSW machine cancel, Cat $7,500. Ceremuga Certificate (2012). (Image1)

Estimate AU$5,000

£2 Black & Rose Sperati Die Proof Forgery, signed "Jean de Sperati" in pencil at base, on reverse 'sunburst' cachet in bright yellow and BPA 'SPERATI/"50"/REPRODUCTION' handstamp, BW #55cc. Highly significant item, Cat $12,500. RPSL Certificate (1971). (Image1)

Estimate AU$7,000

£2 Black & Rose with Melbourne [24/25A]P13 CTO quarter cancel, for UPU distribution, BW #55wa, no gum, Cat $6,000. Only 400 issued (Image1)

Estimate AU$2,500

£2 Black & Rose with Brisbane CTO cancel, BW #55wc, mint. Only 67 issued. (Image1)

Estimate AU$5,000

£2 Black & Rose block of 4 [R45-46,51,52], unit 45 Break in west coast of Gulf of Carpentaria, BW #55(D)v, blue crayon cross partly removed from lower left unit. Ceremuga certificate (2012). An extremely rare block. (Image1)

Estimate AU$35,000

£2 Purple-Black & Rose, BW #56C, fresh MUH, Cat $17,500. A rare stamp (Image1)

Estimate AU$6,000

£2 Purple-Black & Rose, BW #56C, mint, small tone spot, Cat $6,500. (Image1)

Estimate AU$1,500

£2 Grey-Black & Crimson [L51], BW #56B, fine MVLH, Cat $6,500. (Image1)

Estimate AU$2,500

£2 Purple-Black & Rose perf 'OS', marginal single, BW #56Cb, MLH, Cat $10,000. Ceremuga certificate (2013) (Image1)

Estimate AU$4,000

£2 Black & Rose with 'SPECIMEN' type C, BW #56xb, MLH, Cat $500. (Image1)

Estimate AU$150

£2 Purple-Black & Crimson block of 4 with 'SPECIMEN' type C ovpt, BW #56xc, MLH, light aging, bottom units MUH, Cat $12,500. One of 4 known blocks. (Image1)

Estimate AU$4,000

£2 Black & Rose with 'SPECIMEN' type C Sub-type 2 (shaved 'P'), BW #56xf, tiny thin, MLH, Cat $1,250. (Image1)

Estimate AU$200

£2 Purple-Black & Rose Ash Imprint pair, BW #56za, MLH, Cat $35,000. (Image1)

Estimate AU$15,000

£2 Black & Rose Kangaroo's ear at right broken [R47] with 'SPECIMEN' type C ovpt, BW #56(V)u, MLH, Cat $9,750 as normal stamp. (Image1)

Estimate AU$150