Lot 1261
GB SG 743 1967-70 1s6d colour trial in deep ultramarine

Important Great Britain, Including the Steve McGill Grand Prix collection of Machins | S26002
Auction: 11 February 2026 10:30 GMT
Description
1967-70 1s6d (OCP/PVA) imperforate marginal colour trial in deep ultramarine, (printed by Harrisons from a small rotary press of four impressions) with two ‘blank’ impression with cylinder no. ‘2A’ printed in gold in the middle impression, mint unmounted o.g. ink offsets on reverse, an attractive and rare proof. SG 743

