Watch List notes:

BITHYNIA. Kalchedon. Circa 260s BC. Drachm (Silver, 20 mm, 4.17 g, 1 h), an unusual autonomous issue with the types, but not the name, of Lysimachos. Diademed head of Alexander to right, horn of Ammon over his ear. Rev. ΚΑΛΧΑ / ΔΟΝΙΩΝ Athena seated on throne to left, holding Nike in her right hand and resting her left in her lap; over her right shoulder, spear; under her left elbow and propped on her throne, shield; in field to left, monogram of ΑΦ; in exergue, grain ear. Marinescu 6 (O5/R6). SNG Berry 910. SNG BM Black Sea) 132. Very rare. Very fine.