TROAS. Dardanos. Diobol (Early-mid 5th century BC).
Obv: Head of cock right.
Rev: Facing head of panther within incuse square.
Gorny & Mosch 216, lot 2482 (which realized a hammer of €650) = Asia Minor Coins online #11029; Numismatik Naumann 67, lot 165 (which realized a hammer of €700).
Very rare
Condition: Near very fine.
Weight: 1.40 g.
Diameter: 10 mm.