Great Britain 1880 5d Indigo die proof, SG169varGreat Britain 1880 5d Indigo die proof, SG169var. A superb example printed by De La Rue in black on white glazed card (92x61mm) dated twice "5 AUG 80" in blue. A scarce specialised Queen Victoria philatelic piece. The 5d stamp was required for correspondence with India and China paying double rate (1 ounce). A hand painted essay in the issued design, except that it had corner letters and was for 9d, was amongst those submitted on 31 May 1880. It