BITHYNIA, Kalchedon. Circa 340-320 BC. AR Siglos (17mm, 5.33 g). Persic standard. Bull standing left on grain ear / Quadripartite square of mill-sail pattern. Türkoğlu S02c; HGC 7, 517. Toned, small die break on obverse. VF.
From the Lampasas Collection. Ex Classical Numismatic Group Electronic Auction 162 (11 April 2007), lot 69.