engelska-franska översättning av watermark

filigraneUn remarquable filigrane d’ingérence philatélique, perpétré uniquement par ignorance de la tradition britannique, et un souhait de mettre à mort le courrier postal. A high watermark of philatelic interference, perforated only by ignorance of British tradition and a wish to kill letter writing stone dead.
filigraner

A translucent design impressed on the surface of paper and visible when the paper is held to the light
A value stored in a datafile to ensure its integrity, so that if the file's contents are changed then the watermark will no longer match the contents
To mark paper with a watermark