History of Watermarks

European papermakers — almost certainly Italians — invented watermarks around the late 13th century. The earliest confirmed examples come from Fabriano, Italy, dating to around 1282. And here's what's interesting: they weren't created for artistic or security reasons at first. They were purely practical. Each mill needed a way to mark their product as theirs.

Think of it as the medieval version of a brand logo. A papermaker in Fabriano competed with other mills. How do you prove your paper came from your mill and not someone else's? You put your mark on every sheet, but not by printing it (anyone could copy a print). Instead, you build the mark into the mould itself. Impossible to counterfeit without the actual mould. Impossible to remove. It appeared on every single sheet automatically.

Over centuries, these marks evolved. What started as simple mill identifiers became elaborate designs — portraits, heraldic shields, animals, religious symbols, ornate letterforms. The foolscap and jester's cap (which ended up on cheap paper and gave us the term "fool's paper"). Crowns. Coats of arms. Regional variations that only collectors would recognize. Papermaking guilds used them to certify quality. They became so interesting that studying them turned into an actual discipline — briquet (named after the scholar Charles-Moïse Briquet who pioneered the field), which is essentially the study of watermark history and bibliography.

And watermarks became storytellers. Sometime in the 18th and 19th centuries, scholars figured something out: you could authenticate or date a document by looking at its watermark. A letter claiming to be from 1785 couldn't possibly have a watermark from a mill that didn't open until 1790. Suddenly you had a powerful tool for catching forgers, establishing where a document came from, and dating things that had no date written on them. This became crucial work for historians, archivists, and literary scholars hunting for clues in old papers.

The other major use was security. Because watermarks are created during the papermaking process, not after, they can't be added to finished paper — there's no way to fake one without essentially remaking the entire sheet. That made watermarked paper perfect for currency, legal documents, anything that needed authentication. Modern banknotes use sophisticated watermarks as part of their security system, often combined with color-shifting inks and embedded security threads.

A Common Misconception About Watermarks

A lot of people think watermarks are created by pressing or embossing the paper after it's dry. That's wrong, and understanding why reveals something fundamental about how papermaking works. The watermark has to be built into the paper during formation, not added afterward.

Here's the why: when fibers are still wet and being deposited, they conform to whatever shape is underneath them — including any raised wire design on the mould. As the paper dries, those thin areas stay thin. The structure is locked in. But if you tried to emboss a watermark into a finished, dried sheet? You'd just create a surface dent that would flatten back out when the paper is pressed or even just handled. The mark would have no permanence. It wouldn't have that translucency effect that makes a true watermark distinctive. It would be a surface feature, not a structural one.