In the Ptolemaic era, a new method for wrapping bodies for burial emerged: decorative cartonnage mummy covers. This “chest plate” would originally have belonged to a set comprising a mask with a chest piece, a chest plate, and sandal soles. It was attached to the mummy's outer shroud with very thin bandages in a criss-cross pattern that left traces which are still visible.

The scenes and motifs carry on Pharaonic themes: a Usekh collar made from several rows of multi-coloured pearls is spread out beneath a winged disc flanked by cobras, with falcon-head clasps below a solar disc.

Underneath is the scarab beetle Khepri, wings stretched out, holding the sun before him; on either side are vignettes featuring papyrus stalks and two Wadjet eyes. The lower two levels are taken up by a scene depicting an embalming taking place before Anubis, Isis, as well as Nephthys, and by a boat carrying these three deities. Each of these images contributes to providing symbolic and magical protection for the deceased and helps them to be reborn in the Kingdom of Osiris.