Asta LIVE: https://www.biddr.com/auctions/aurora-heritage/browse?a=6096
MYSIA, Kyzikos. Circa 500-450 BC. El Stater (Electrum, 19.36 mm, 16.14 g). Facing gorgoneion; below, tunny left. RV. Quadripartite incuse square. Von Fritze I 129; Boston MFA 1445 = Warren 1492; cf. SNG von Aulock 7295 (hemihekte); SNG France –. Very Fine. Acquired privately in 2010.