A thin, tough, translucent, resin-impregnated paper, which was used for the 1886 parcels stamps of Prussia. The stamps were printed on a collodion surface on the reverse side, the gumming being done on top of the ink. They were not sold to the public, but were affixed to heavy parcels only, by the postal officials.
A paper with coloured fibres mixed with the pulp. Normally these are blue, the paper then being often known as 'Silurian'. Certain stamp issues of Switzerland, for instance, were printed on a granite paper with an admixture of chopped coloured fibres. It is a form of 'security' paper, used to deter forgery.
- R. J. Sutton 6th edition revised by K. W. Anthony
The Stamp Collector's EncyclopaediaPublished 1966Posted January 1, 2000
Index of 507 Notes from the Past
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