Gold Stater Koson type

The Koson staters occupy one of the more contested attribution debates in ancient numismatics. Most scholars now connect them to Koson, a Dacian or Thracian dynast operating in the power vacuum following Caesar's assassination in 44 BC, possibly with backing from Brutus — whose monogram appears on some specimens. Whether Koson was an independent ruler seeking Roman alliance or a client issuing coins under Brutus's direct patronage remains unresolved.

Hundreds of thousands of these staters reportedly surfaced from a single hoard found in Transylvania in the 19th century, flooding the market and complicating rarity assessments ever since.