Stater - Philip III Arrhidaeus Sardes

Philip III Arrhidaeus was Alexander the Great's half-brother — intellectually disabled, likely from a poisoning attempt in childhood — installed as king by the Macedonian infantry faction immediately after Alexander's death in 323 BC as a counterweight to the infant Alexander IV. He never exercised real power; Perdiccas, then Antipater, then Polyperchon governed through him. The Sardes mint, freshly inherited from the Achaemenid treasury infrastructure, continued striking gold staters under his name using types derived directly from Alexander's coinage.

Philip III was murdered on Olympias's orders in 319 BC, making this a four-year issue at most.