Watch List notes:

THESSALY. Pharsalos. mid 5th century BC. Obol (Silver, 10 mm, 0.93 g, 12 h). Head of Athena to right wearing an Attic helmet adorned with a serpent. Rev. Φ-Α-R Horse's head to right; all within incuse square. BCD Thessaly I, 1279 (same obverse die). Traité II, 1, 1423 and pl. XLIII, 14. Rare. Very well-centered, attractive and lightly toned. A whisper of doubling on the obverse and a very minor die break on the reverse, otherwise, extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions.