Watch List notes:

THESSALY, Perrhaiboi. Circa 450-400 BC. AR Trihemiobol (13.5mm, 1.14 g, 7h). Olosson or Phalanna mint. Thessalian warrior, holding two spears, on horse trotting left; altar below / Π-[Ε]-Ρ-A (P retrograde), Athena seated left on chair, holding helmet; all within incuse square. BCD Thessaly II 547 var. (same dies); HGC 4, 144. Fine, toned, a couple light marks.

From the BCD Collection. Ex Colosseum Coin Exchange 74 (2 February 1994), lot 46.