Tony has posted some photographs from the days when he was involved in field work at the site Kom el Hisn, in the western Delta.
That’s a burial in a mud brick tomb. It was intrusive into the other structures meaning it was later than the building containing it, though how much later is unclear — most say First Intermediate or Middle Kingdom, I think it might still be Old Kingdom. This was after excavation. It was of an elderly female and there was some plaster outlining the body suggesting some sort of coffin. Note the only grave good, a bronze or copper mirror