Watch List notes:

MYSIA, Kyzikos. Circa 550-450 BC. EL Stater (20mm, 16.13 g). Forepart of ram left; to right, tunny upward / Quadripartite incuse square. Von Fritze I 46; Greenwell 132; Boston MFA 1420 = Warren 1556; SNG BN –; BMC –; Gulbenkian –; Jameson 2165; Kraay & Hirmer 703. Lightly toned, banker's mark in field on obverse. VF. Well centered. Extremely rare, only six in CoinArchives.

From the Jonathan P. Rosen Collection.