Kings of Pontos. Mithradates VI (120-63 BC)
Ionia. Smyrna. Hermogenes and Phrixos, magistrates
85-75 BCE 24.14mm 12.54g
Obverse: Diademed head of Mithradates VI right
Reverse: ZMYPNAIΩN – EPMOΓΕΝΗΣ – ΦΡΙΞΟΣ, Nike standing right, holding wreath and palm frond
SNG Copenhagen 1206
Ex Marc Breitsprecher

The coinage of earliest Pontic kings are considered works of art and go for tens of thousands. My example is far more modest and comes from Mithradates VI, who gave the Roman Empire a good run for their money.