I recently attended the Torex show in Toronto. Although "shut out" on my primary goals, this ancient coin caught my eye and I have always wanted a coin predating Christ's birth (and not too expensive). I have done some basic research/confirmation but, I believe I am humble enough to know when my abilities are stretched far beyond reality.
The purchase contained provenance (?) from Pegasi Numismatics of Ann Arbor, Michigan (along with a similar note from my Seller):
Thessaly, Larissa. 400-344 BC. AE 16 (4.29gm). Head of nymph Larissa / Horse about to roll. SNG. Cop. 142. VF, green patina
My stats: Weight: 4.31 grams, Diameter: 15.99 - 16.45 mm and wildwinds example matching "SNGCop 142"


Apologizing in advance for the photos.
If everything looks legitimate, I don't see it in our catalogue and I will add it.