This is a section from the head end of an anthropoid coffin, and we’re looking at the outer wall. The coffin belonged to a man called Pakherenkhonsu, and it was found in one of the tombs at Thebes (MMA832).
The coffin dates to the 25th Dynasty, however the tomb it was found in was constructed during the 11th Dynasty according to the museum label; wikipedia says 22nd Dynasty which is quite a contradiction! Whichever it is, it’s clear Pakherenkhonsu was re-using someone else’s tomb.
He was a Doorkeeper of the Temple of Amun, a relatively minor part of the temple hierarchy. But nonetheless he must’ve had things worth stealing – his burial was found in a disturbed condition, with his coffins in pieces.
This and other pieces of his coffins are in the Met Museum (this is acc. no.: 28.3.53).
See it on my photo site: https://photos.talesfromthetwolands.org/picture.php?/1497/