Tetrobol

Dikaia was a small Macedonian coastal settlement, almost certainly a Chalkidian colony, that issued coins during a window when autonomous civic coinage in the northern Aegean was still practical — before Macedonian royal consolidation made such independence increasingly difficult to sustain. The city's output was modest, and surviving examples are genuinely scarce rather than artificially so.

The Boston MFA specimen, catalogued as #803, remains one of the primary reference points for attributing this type.