Tetrobol - Philip III Arrhidaeus

Philip III Arrhidaeus was Alexander the Great's half-brother — intellectually disabled, politically manipulated, and proclaimed king by the Macedonian infantry immediately after Alexander's death in 323 BC. He never exercised real power; the generals who fought over the empire used him as a legitimizing figurehead until Olympias, Alexander's mother, had him executed in 317 BC. Coinage struck in his name continued briefly after his death under the diadochi, which accounts for the extended issue range into 315 BC.

The tetrobol denomination saw limited production relative to the tetradrachm series, making this a genuinely scarcer denomination within the Philip III coinage.