Watch List notes:

Bithynia, Kalchedon AR Drachm. Circa 367/6-340 BC. Rhodian standard. Bull standing to left on grain ear; KA[ΛX] above, kerykeion and ΔA monogram to left / Quadripartite incuse square. HGC 7, 511; SNG BM Black Sea 104; SNG von Aulock 487-488. 3.78g, 15mm.

Near Mint State.

From a private North American collection;
Ex Nomos AG, obolos 12, 31 March 2019, lot 305.