Euboea: Did you mean...?

A scene from a black-figure vase of the Phoenician founder of Thebes Cadmus slaying the dragon which dwelt there. From Euboea, 560-550 BCE. Louvre Museum, Paris.

Silver tetradrachm from Eretria Euboea, c. 485 BCE. O: Cow, R: Octopus in incuse square. (Alpha Bank Numismatics Collection, Kerkyra, Corfu)