ATTICA, Athen. 590-500 BC. AR tetradrachm (17,00 g) "Civic mint". Head of Athena in Attic, crested helmet to right / AΘE, Owl standing right, head facing; Olive spray and crescent to left. All within incuse square. Rough worn surfaces. Graffiti on reverse. Very rare. Ex. Harlan Berk Buy & Bid sale 183, lot 116. March 28th, 2013. Grade:1/1-