Trichalkon

Gyrton was a minor Thessalian city on the Peneios River, and its bronze coinage is rare enough that most major collections hold only a handful of examples. The city appears in ancient sources primarily as a staging point during Philip II of Macedon's repeated interventions in Thessaly — interventions that reshaped the region's political structure so thoroughly that many smaller mints ceased production entirely within a generation.

The BCD Thessaly collections remain the benchmark reference for this type, and the cross-referencing across both BCD volumes alongside Rogers and the SNG Copenhagen specimen suggests this die pairing has been tracked through at least four significant auction appearances.