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 earliest known bookmark dates back to the 6th century AD, crafted from ornamented leather lined with vellum on the reverse side, and secured by a leather strap to the cover of a Coptic codex (Codex A, MS 813 Chester Beatty Library, Dublin). It was discovered near Sakkara, Egypt, beneath the ruins of the monastery Apa Jeremiah.