The Latin Works of Giordano Bruno

original: "YRARBIL DROFNATS". This is a mirrored image of a "perforated stamp," a security feature where the library's name is punched through the paper in small holes. Since we are looking at the back of the page, the text appears in reverse.

This is a handwritten or stamped accession number, a unique ID assigned by the library to track this specific copy of the book in their collection.

Perforated Stamp: A method of marking ownership by punching holes in the shape of letters through the pages of a book, making the mark nearly impossible to remove without destroying the paper.