This sign is also found in the Minoan and Mycenaen civilizations.    From Wordnik.com.  [Hand Signed | SciFi, Fantasy & Horror Collectibles] Reference

Thus, there is every reason to suppose that Near Eastern influences on the Aegean during the Mycenaen period would have affected the later civilization of Archaic and Classical Greece.    From Wordnik.com.  [An Exchange on 'Black Athena'] Reference

The underwater museum is scattered all over the castle, so you can walk into one or another of the towers and see amphorae, jewelry, glassware, Mycenaen pots, metal ingots, seals, weapons, anchors, elephant ivory, ostrich eggs, and the eerie carved eyes that were fastened to the stemposts of ancient ships.    From Wordnik.com.  [Archive 2009-05-01] Reference