D30 1937-8 George VI 3d Violet Postage Due Watermark "G VI R" B 37 Imp Control marginal pair in very fine and fresh lightly mounted mint condition. Standard shared hinge top remains between the two stamps.

Like every stamp I sell this has been fully checked and confirmed by myself as correctly identified and described, not just removed from album where it was listed as such. Not really hard task on such Control marginal copies of course.