Australia: 1913-14 First Watermark 5s. grey and yellow, mint, almost imperceptibly mounted, well centred, minor corner crease and one or two minor tone spots on gum, otherwise fine and fresh. S.G. 13, cat. £450. Photo. (Image1)

Australia: 1913-14 First Watermark 10s. grey and pink, unmounted mint, well centred, slightly short perf. at right and very lightly toned gum, otherwise fine. S.G. 14, B.W. 47, cat. $7,500. Photo. (Image1)

Australia: 1913-14 First Watermark 10s. grey and pink, fine used. S.G. 14, cat. £700. Photo. (Image1)

Australia: 1913-14 First Watermark £1 brown and ultramarine, unmounted mint, centred slightly to right, fine. S.G. 15, B.W. 51, cat. $17,500. Photo. (Image1)

Australia: 1913-14 First Watermark £1 brown and ultramarine, used, thinning and creasing, otherwise fine. S.G. 15, cat. £2,500. Photo. (Image1)

Australia: 1913-14 First Watermark £2 black and rose, fine used with dubious cancellation. S.G. 16, cat. £4,000. Photo. (Image1)

Australia: 1913 First Watermark £2 black and rose, Sperati forgery ‘used’, with “SPERATI REPRODUCTION” stamped on reverse with “35” in manuscript, rare. Photo. (Image1)

Australia: 1915 Second Watermark 2s. brown, unmounted mint, centred left, lightly toned gum, otherwise fine. S.G. 29, B.W. 36, cat. $8,500. Photo. (Image1)

Australia: 1915 Second Watermark 5s. grey and yellow upper right corner example, unmounted mint (mounted in selvedge), centred right, folded along perfs. and through selvedge, otherwise fine. Ceremuga certificate (2006). S.G. 30, B.W. 43, cat. $6,500. Photo. (Image1)

Australia: 1915-27 Third Watermark 10s., unmounted mint, well centred, creasing, otherwise fine. S.G. 43, B.W. 48, cat. $2,750. Photo. (Image1)

Australia: 1915-28 Third Watermark £1 chocolate and dull blue upper marginal example, unmounted mint (mounted in selvedge), centred to lower right, some imperfections, fine appearance. S.G. 44, B.W. 52, cat. $17,500. Photo. (Image1)

Australia: 1915-27 Third Watermark £1 chocolate and dull blue, used, corner creases and short perfs. at top, otherwise fine. S.G. 44, cat. £1,600. Photo. (Image1)

Australia: 1915-27 Third Watermark £2 purple-black and pale rose, unmounted mint, centred to upper-right fine, scarce. Ceremuga (2011) and Raybaudi (2000) certificates. S.G. 45, B.W. 56, cat. $20,000. Photo. (Image1)

Australia: 1923-24 Third Watermark £1 grey, unmounted mint, centred left, fine. S.G. 75, B.W. 53, cat. $3,750. Photo. (Image1)

Australia: 1923-24 Third Watermark £1 grey, fine used. S.G. 75, cat. £350. Photo. (Image1)

Australia: 1929-30 Small Multiple Watermark 10s. grey and pink left marginal example, unmounted mint, centred slightly low, fine. S.G. 112, B.W. 49, cat. $3,000. Photo. (Image1)

Australia: 1929-30 Small Multiple Watermark 10s. grey and pink, fine used. S.G. 112, cat. £500. Photo. (Image1)

Australia: 1929-30 Small Multiple Watermark £2 black and rose, unmounted mint, centred low, tiny crease at top, otherwise fine and fresh. S.G. 114, B.W. 57, cat. $20,000. Photo. (Image1)

Australia: 1929-30 Small Multiple Watermark £2 black and rose, fine used. S.G. 114, cat. £750. Photo. (Image1)

Australia: 1931-36 Watermark Crown C of A 10s. grey and pink, unmounted mint, small crease and short perf. at top right, otherwise fine. S.G. 136, B.W. 50, cat. $2,750. Photo. (Image1)

Australia: 1931-36 Watermark Crown C of A £1 grey, unmounted mint, centred to upper right, fine. S.G. 137, B.W. 54, cat. $3,250. Photo. (Image1)

Australia: 1931-36 Watermark Crown C of A £2 black and rose, used, bent corner perf., otherwise fine. S.G. 138, cat. £600. Photo. (Image1)

Australia: 1931-36 Watermark Crown C of A £2 black and rose right marginal example, unmounted mint, centred high, fine. S.G. 138, B.W. 58, cat. $15,000. Photo. (Image1)

Australia: 1955-57 4d. complete sheet of 160 with one stamp showing plate retouch, 1974-79 Paintings $2 and 1974 Christmas 35c. complete sheets of 100 both showing numerous minor varieties, fine unmounted mint. S.G. 282a, 566, 579, cat. £293.

Australia: 1978 Early Aviators 18c. Hawker with colour shifts, 18c. Kingsford Smith imperf. pair, and 1985 Children’s Books 33c. Blinky Bill and Snugglepot & Cuddlepie se-tenant pair with Blinky Bill stamp imperf. on three sides, unmounted mint, fine. B.W. 790c, 791b, 1109b, cat. $1,400. Photo. (Image1)