This amulet represents the god Bes. In the form of an amulet, Bes is represented by his grimacing face.
Generally speaking, the role of Bes was to watch over humans in their daily lives, which makes him very popular and close to the Egyptians.
The main interest of this amulet lies mainly in the label stuck on the back indicating:
"Taken from a sarcophagus of the pyramid of Cheops"
This probably apocryphal mention is a touching testimony for the enthusiasm of Europeans after the Napoleonic campaign.
The last image shows a similar model in better condition at the Museum of Fine Arts in Budapest.