One of the signs for the war god
Ares, representing the
power of murderous aggression, violence and warfare in ancient Greece. It was also drawn and otherwise.
Ares was the son of Zeus and Hera, and worshipped in all of ancient Greece, but most intensively in the aggressive warrior and slave holding state of Sparta.
In the Roman Empire Ares' Roman counterpart, Mars, , was one of that empire's most important divinities after Jupiter.
Compare with , found on a rock carving on the west coast of Sweden.
In the French hobo or gypsy sign system meant here there is lots of money, alas very carefully hidden.