Athen, tetradrachm (16, 81 g), approximate 280-261 BC Av: Athena head with Attic helmet to the right. Rev: owl to the right, behind olive branch and crescent. Svoronos Tf. 20, BMC 14, 147, ss. From a Rhine private collection. Lot 154 the 189. Auction coin center Rhineland, 2019, Solingen.