The Kosons are the only gold coins that have been minted by the Dacians, named after the Greek alphabet inscription "ΚΟΣΩΝ" on them.
[1] It is thought that "Koson" is the name of an otherwise historically unrecorded Dacian king, though he may be identical to the Cotison mentioned by Horace and Suetonius.
The coins contain Roman iconography: on the obverse, there is an eagle standing on a scepter and holding a wreath in their claw (inspired by the silver denarii issued by Pomponius Rufus); the reverse contains three men dressed in togas, two of them holding an axe on the shoulder (possibly inspired by the silver denarii issued by Marcus Junius Brutus in 54 BC).
[4][5] Vasile Pârvan argues that he was probably a Thracian dynast who employed the Dacian Getae tribe in plundering raids across the Danube, paying them in his coins.
Recent scholars often argue that he is very likely to be identical to the "Cotison" mentioned by Horace (Odes III., 8, 18,) and Suetonius, (Augustus, 63.