Tetrachalkon

Gambrion was a minor Mysian city whose precise location remains debated — most scholarship places it inland from the Aegean coast, though no definitive archaeological site has been confirmed. The city issued bronze coinage during the Hellenistic transition, when dozens of small Asia Minor mints struck locally for regional exchange, largely independent of Macedonian monetary authority despite Alexander's campaigns reshaping the broader economy around them.

The SNG Copenhagen and SNG France references document several die variants across this type, suggesting more than one production phase within the 150-year window.