1931-38 6d Kingsford Smith Airmail Overprinted 'OS' Plate 1 Ash imprint block of 8 BW #144(OS)zd, fresh MUH, Cat $375+. (Image1)

Estimate AU$180

1932 5/- Sydney Harbour Bridge well centred, CTO with gum. BW #148w, Cat $300. (Image1)

Estimate AU$200

1932 5/- Sydney Harbour Bridge CTO, well centred, without gum. BW #148w, Cat $300. (Image1)

Estimate AU$150

1935 Anzac 1/- black and 6d Large Kooka, BW #165, Cat $350 on air cover from Derrinallum to England (Image1)

Estimate AU$250

1937-38 1d Green QE Die I upper-left corner block of 4 showing full Plate Nº. 7 BW #181zr, due to paper fold, stamps fresh MUH, Cat $1,250. (Image1)

Estimate AU$750

1937-38 1d Green QE Die I upper-right corner block of 4 showing almost complete Plate Nº. 7 BW #181zt, lower stamps MUH, Cat $1,250. (Image1)

Estimate AU$600

1938-41 2d Red KGVI Die II Coil pair with uniformly large holes BW #188bh, tied to piece, Cat $400. (Image1)

Estimate AU$120

1941-44 2d Mauve False Coil strips of 4 (one with join) plus 5½d Emu on 1945 registered air cover from Potts Point to Hong Kong. A very difficult stamp to find on cover. (Image1)

Estimate AU$150

1937-41 3d Blue KGVI Die Ia BW #192 x3 one with slight gum bend, another with mild gum tone, fine MUH overall, Cat $1,200. (3) (Image1)

Estimate AU$160

1941-51 3d Brown KGVI Perf 14¾x14 variety 'White face' - ink stripping of varying degrees in a gutter block of 8 from base of sheet, showing large portion of Plate Nº 14, BW #196c&zc, fresh MUH. Possibly a unique combination. (Image1)

Estimate AU$800

1937-59 1/- Lyrebird No Watermark Perf 14¾x14 variety 'Green Mist' retouch [ShB L9/3] BW #210g in lower-left corner block of 12, fresh MUH, Cat $5,000+ (SG #230da, Cat £4,250). Rare positional piece. Ceremuga Certificate (2017). (Image1)

Estimate AU$5,000

1938-49 10/- Robes Thin Paper red-purple (aniline) used, with BSAP cert (1966). This shade has since been deleted from the catalogue due to doubts about its authenticity. A nice curio. (Image1)

Estimate AU$50

1942-50 2½d Scarlet KGVI block of 4 variety White face BW #230c, fresh MUH, Cat $1,100+. (Image1)

Estimate AU$600

1946 2½d Peace x36 on Australian Iron & Steel (BHP) oversized printed cover (400x250mm) from Sydney to Melbourne, the 7/6d franking paying the combined airmail, express delivery & late fee, edge toning in places around stamps, fine overall. An impressive cover. (Image1)

Estimate AU$200

1950-51 1½d Green Queen Mother uncatalogued Plate No '4' (without hyphens) top centre gutter block of 8, plate number partially guillotened, fresh MUH, Cat $4,000+ (as a 'With Hyphens' gutter block of 4). Apparently unique. (Image1)

Estimate AU$2,500

1951 3d Scarlet KGVI Booklet Plate BW #251c complete panes of 144 plus left and right half pane, fresh MUH, Cat $720+. Plus ½d orange Roo panes or part panes with Colour flaw from right ear to O x3 and Foggy Hills x1 (9 items) (Image1)

Estimate AU$150

1951-53 3d Dark Green KGVI variety Printed on green tinted paper, BW #252a, fresh marginal mint, Cat $1,000. (Image1)

Estimate AU$500

1957-66 10d Grey-Blue QEII BW #322 used in lieu of double deficiency postage due on 1963 Melbourne local cover, very fine 'T10D'-in circle handstamp, small opening tear at top, typed address. (Image1)

Estimate AU$60

1954 3½d YMCA Centenary block of 4 hinged to Post Office Publicity Card BW #328x, fresh, Cat $200. (Image1)

Estimate AU$100

1957 Unadopted Designs for 1957 Royal Flying Doctor Service and 1957 Christmas. Letter press proofs of the essay signed by Anthony Helliwell, the designer. Unusual. (2) (Image1)

Estimate AU$80