Lot 1266
GB SG 831 1970 50p complete offset on reverse mint

Important Great Britain, Including the Steve McGill Grand Prix collection of Machins | S26002
Auction: 11 February 2026 10:30 GMT
Description
1970 50p deep ultramarine (Post Office paper/PVA) top marginal vertical pair, with top stamp showing near complete offset on reverse, mint unmounted o.g.; small natural paper inclusion, otherwise fine, a very striking item. SG 831
Footnote
Ex. Grovesnor (Sale 24 Lot 1471) when offered as block of eight from where this single was taken.

