Watch List notes:

THESSALY, Perrhaiboi. Circa 450-400 BC. AR Trihemiobol (14mm, 1.26 g, 1h). Thessalian cavalryman on horseback right, holding two spears; altar below / Π Ε Ρ Α (retrograde) around from upper right, Athena seated left, holding helmet; all within incuse square. BCD Thessaly II 547 (same dies); HGC 4, 144. Near VF.

From the BCD Collection.