1862-81 Sitting Helvetia 25c yellow-green error DOUBLE impression one inverted. VFU, '15 X 70' cds. Mi 32(var). SG 64c cat £1700. (P) (Image1)

Estimate AU$600

1881 Sitting Helvetia 5c black-brown error DOUBLE impression, one inverted. VFU, '23 XI 7' cds. Mi 22(var). SG 106a cat £550. (P) (Image1)

Estimate AU$300

1881 Sitting Helvetia 50c purple granite paper error DOUBLE impression, one inverted'. VFM. Mi 43(var). SG 112a cat £325. (P) (Image1)

Estimate AU$250

1932 International Disarmament Conference set 5c-1Fr, plus Air set 15c-90c, in blks of 4 M & CTO with Special Conference '2 11 32' FDI cds, all in presentation booklet. Superb fresh M/CTO. Mi 250-58 cat €625+. SG 338-46 cat £626+, plus premium for rare presentation booklet. (Image1)

Estimate AU$400