Obol

Heraia, a modest Arcadian city-state on the upper Alpheios River, produced coinage in limited quantities throughout the classical period — the small silver obol being among the most seldom encountered denominations from the mint. The BCD Peloponnesos collection, assembled by a single dedicated collector and sold at Leu Numismatik in 2021, remains the defining reference corpus for exactly this kind of regional Peloponnesian issue, precisely because institutional collections had largely overlooked them.