Stamp Glossary "W"
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Watermark A design, device or pattern, formed by the
dandy roll pressure in the wet pulp stage of manufacture, to prevent forgery.
Wove Paper A machine made paper which, when held to
the light shows the "watermark" of a finely woven mesh screen upon which
the paper pulp is deposited during manufacture.
Wreck Cover A cover which has been salvaged from a
shipwreck and carries an official cachet to indicate so. |