Greek
THRACO - MACEDONIAN TRIBES, Derrones (Circa 5th Century BC)
AR Hemiobol (7.4mm, 0.28g)
Obv: Head of Athena(?) to left wearing a Corinthian helmet.
Rev: Corinthian helmet, Δ below; all within incuse square.
Roma E-81, 248; Naumann 98, lot 44