Watch List notes:

THRACE, Byzantion. Circa 387/6-340 BC. AR Drachm (14.5mm, 2.74 g). Bull standing left on dolphin left; monogram to lower left / Quadripartite incuse square with stippled quarters. Schönert-Geiss, Byzantion, Period II (unlisted monogram); HGC 3, 1387. Lightly toned. Near EF. Struck in sound metal.