The highly-glazed surface of the paper, used for #62, #63 and #64, preventing the ink from penetrating into its substance, the colour shows a tendency to peel off ; in fact, so enamel-like is the surface, that it is possible to remove every trace of the impression without in the least damaging the gloss on the paper. The Fourpence stamp was printed a new ink on the thinner soft paper, the use of which was adopted towards the end of 1856, in place of the unsatisfactory “safety” paper hitherto employed