In philately, chalky paper is a type of paper coated with a chalky solution for security purposes.[1] The postmark cannot be removed without damaging the surface of the stamp[2] thus discouraging erasure of cancellations and fraudulent reuse of stamps. The paper was first coated with a chalk-like powder, and the ink for the stamp was then impressed upon the paper. Collectors are cautioned not to attempt to remove a stamp printed on chalky paper from an envelope or paper backer by soaking it in fluid, as this may destroy the stamp's design. A simple test for chalky paper is to rub a silver coin over it, resulting in a "pencil" type mark.[2]
References edit
- ^ Scott Publishing Company, Classic Specialized Catalogue of Stamps & Covers (2007;) ISBN 0-89487-382-2
- ^ a b Bennett, Russell and Watson, James; Philatelic Terms Illustrated, Stanley Gibbons Publications, London (1978).