ATTIKA. AR-Tetradrachme 440-420 B.C. ==References== Vs.: Head of the Athena with helmet and laurel n. r., Rev.: owl stands n. R., head v. v., upper left oil branch next to moon crescent, all in quadratum incusum. 17.11 g. Vs a little rough, Vs. Scratches, ss/ss-vz. ex Münzen & Medaillen AG, Basel, list 530, March 1990, no. 180 (with copy of invoice)