coffin piece (coffin (fragment))

Thick piece of wood coffin. It is coated with plaster and painted on both sides with hieroglyphs in dark and light yellow, black, pale blue and cream(?) coloured paint. It is almost square shaped. It has a hole bored near the bottom edge on one side and on the other side at the opposite end there is a broken off bevil. It is mounted on a thin piece of black painted board. The hieroglyphs on one side are in about 4 or 5 vertical rows on one side, and 5 horizontal rows on the other side.