Aureus of Gnaeus Domitius Ahenobarbus, CE, issued in the region of the Adriatic or Ionian Sea. The obverse contains a portrait of Gnaeus Domitius Ahenobarbus or one of his ancestors; the inscription reads simply AHENOBARB[us]
This is a gold roman coin. Because of different areas around the continent being connected by maritime trade routes, gold and jewels would end up far from their country of origin. Roman gold would be found in India.