QEII I.T.U. Centenary issue 9d Red, Ultramarine, Deep Slate Violet, Black & Pink bottom left hand corner marginal example with 'Wmk Inv'. Superb u.m. Cat £30 (Start Price = £12.80)
QEII Paris Postal Conference Centenary issue top left hand corner marginal bock of 4 with 3 phosphor bands. (Red ink hand written letter 'P' on selvedge). Superb u.m. Cat £26 (Start Price = £12.00)