Filigranology
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Study of Watermarks
Filigranology is the study of watermarks. It is usually pursued in order to discover information about the date and origin for a paper-based piece of writing or a piece of art. There are several catalogues of watermarks – most notably C. M. Briquet's, Les Filigranes (1907) – including illustrations of many watermarks from dated documents to aid those wishing to undertake this kind of research.[1]