Greek
IONIA, Kolophon (Circa 530/25-500 BC)
AR Diobol (8.7mm, 1g)
Obv: Archaic head of Apollo left.
Rev: Quadripartite incuse square.
Unpublished in the standard references; cf. Savoca Numismatik 92nd Blue Auction, lot 591; Numismatik Naumann 107, lot 188.