The earliest existing bookmark dates from the 6th century AD and it is made of ornamented leather lined with vellum on the back and was attached with a leather strap to the cover of a Coptic codex (Codex A, MS 813 Chester Beatty Library, Dublin). It was found near Sakkara, Egypt, under the ruins of the monastery Apa Jeremiah.
The oldest known bookmark is from the 6th century AD and was found in Egypt near Sakkara, beneath the ruins of the monastery Apa Jeremiah. It is made of leather with decorative embellishments on the front and a vellum lining on the back, attached to a Coptic codex using a leather strap.