Description
Great Britain 1924 1d Scarlet & 2d orange (Wmk. Sideways). SG419/21var. Superb matching pair of unmounted o.g. top marginal imperforate blocks of eight overprinted "SPECIMEN" type 23, both showing sheet numbers in margin. A spectacular matching pair unique positional pieces. Spec. N34(1)ua & N36(1)sc.