Sa sign

 
Sa sign, Dynasty 11, reign of Mentuhotep II, ca. 2051–2000 b.c.
Egyptian; Thebes, Mentuhotep Temple, North Triangular Court, Pit 23
Electrum, silver

This hieroglyph, depicting a shepherd's rolled-up shelter, means protection. It was used regularly as an amulet and carried by certain deities, especially the Bes image and Taweret.