Antarctica: British Antarctic Territory: 1975-81 50p. Lincoln Ellsworth and £1 John Rymill, perf. 12, both variety watermark inverted, used with Halley “29 DE/87” type Z7 c.d.s. to ‘Barber’ cover, the £1 with lower margin (unaffixed) S.G. 77aw, 78aw. Photo. (Image1)

Antarctica: British Antarctic Territory: 1975-81 £1 John Rymill, perf. 12 (1980), variety watermark inverted, marginal from the foot of the sheet with cylinder nos., fine unmounted mint. S.G. 78aw, cat. £900. Photo. (Image1)

Antarctica: British Antarctic Territory: 1979 Penguins 3p., watermark Crown to right of CA, marginal, unmounted mint, fine. S.G. 89w, cat. £700. Photo. (Image1)

Antarctica: British Antarctic Territory: 1980 R.G.S. 150th Anniversary 11p. gutter pair, both showing offset of black colour (head) on reverse, unmounted mint, fine and very scarce. SH 95v1, cat. £300+, S.G. 95 var. Photo. (Image1)