Watch List notes:

THRACE, Kingdom of, Lysimachos (323-281 B.C.) gold stater (8.51 g), uncertain mint, probably Byzantium, posthumous issue c.200 B.C., obv. head of Alexander the Great to right wearing horn of Ammon, rev. Athena enthroned, lions head to left, trident in exergue, to right **BASILEOS* to left **YSIMAXOY* (cf S.6813). Very fine.

Ex Noble Numismatics Sale 123, (lot 3212.)
The trident in exergue was used, as Seyrig suggests, for Byzantium 205-195BC. Lion's head symbol unpublished.