Great Britain 1883 3d on 3d Lilac Plate 21, SG159Great Britain 1883 3d on 3d Lilac Plate 21, SG159. A superb unused example with original gum, lettered 'AF'. Stanley Gibbons catalogue value: 650. In the early 1880s, the British government became obsessively focussed on the concern that members of the public were removing postmarks from stamps to reuse them. The solution was to use fugitive inks for stamps which would easily dissolve in water. This approach reduced the available ink colours to just