essay 1966 Christmas 3d. imperf. multicoloured essay in the near issued design on gummed paper, affixed to Thomas De La Rue printer's sample page initialled and dated "1-3-66", also a colour proof of the vignette only on gummed paper (130 x 130 mm.) with printer's colour bars and centring lines alongside, and a colour transparency of the same vignette (130 x 160 mm.); the transparency with slight scratching but still a fine and attractive group