Thessaly, Olosson
Struck by Perrhaiboi in honour of their mint city
circa 400-350 BCE
Æ 3.29g, 15mm, 3h.
Thessalian horseman, wearing petasos and chlamys, on horse prancing to right /
ΟΛΟΣ[ΣΟ]-Ν-[Ι]-Ω[Ν], Zeus Keraunios advancing to right, wearing chlamys over shoulders, hurling thunderbolt with right hand, eagle standing to right on his left arm.
S. Lavva, Zur Münzprägung von Olosson, La Thessalie, Actes du Colloque International. Lyon, 1990, p. 315, 2; BCD Thessaly I 1218

I must admit I was initially excited to pick up one of the only two cities I’m aware of that begins with an Omega. However, coins from Olosson are extremely rare and were minted for some special occasion to commemorate the capital of the Perrhaiboi.

Homer labeled the city as “white” due to its soil.