Tetrobol

Ainos, a Thracian coastal city at the mouth of the Hebros River, maintained a remarkably autonomous coinage through the late fifth and early fourth centuries despite sustained pressure from both Athenian commercial dominance and the expanding Odrysian kingdom to its north. This tetrobol falls within a narrow four-year window when the city's mint was producing at documented peak output, corresponding to the references May 333 and McClean 3934 — a pairing that allows reasonably precise die-sequence placement within the series.

May's exhaustive 1966 study of Ainean coinage remains the definitive die catalogue for this type.