The Travertine Codex
A block-printed book bound in an unusual kind of leather, purported to have been created in the 18th C., written in an indecipherable script.
Some of the pages are missing,, with about 120 remaining. The text appears to be written from left to right and many pages have abstract drawings made up of intersecting lines, parabolas and arcs on them.
It was supposedly recovered from under the ash of Pompeii by Rocque Joaquin de Alcubierre in 1748, but scholars dismiss this as impossible. Its provenance is therefore unknown before it was recorded in the archives of the Fitzwilliam Library during a stock-taking in 1998.