The find, which dates back to 2,300 B.C., was made at the site of the ancient necropolis of Saqqara near Cairo.
A grave marker inscribed with a curse in red lettering was found during conservation work at Beit She'arim park.
Egyptian authorities have revealed another significant discovery at the Saqqara necropolis south of Cairo.
The haul of several dozen coffins - with mummies inside most of them - is thought to date back 2,600 years.
The L-shaped necropolis, which dates back to the Fifth Dynasty, was discovered near Saqqara last month.
Archaeologists have discovered more than 800 tombs in an ancient necropolis outside of the village of Lisht.
Archaeologists have unearthed a 3,400-year-old New Kingdom necropolis at the Gebel el Sisila quarry site.
Excavations at the Saqqara necropolis in Egypt have revealed an immense number of animal burials.