Philip III King of Macedonia from 323 BC to 317 BC.
Philip III reigned as king of Macedonia from after 11 June 323 BC until his death. He was a son of Philip II by Philinna of Larissa, and thus an elder half-brother of Alexander the Great.

Originally named Arrhidaeus, Philip III was the closest living relative to Alexander III upon his death - but due to mental disabilities was unfit to rule. Followng a power struggle, it was decided that he would reign as Philip III, but would not rule - this was to be the responsibility of a regent, Perdiccas.

Philip III would formally reign alongside his infant nephew Alexander IV until his death on 25 December 317 BC, where he was executed by his step-mother Olympias, the mother of Alexander III, during one of the many conflicts between the diadochi.
Philip III
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An AR Drachm struck 322-319 BC in Kolophon
Obverse: head of young Heracles in lion's skin right

Reverse: Zeus enthroned left, holding eagle and scepter, barleycorn under throne, spear-spike right AΛEΞANΔPOY

Diameter: 16.5 mm
Die Orientation: -
Weight: 3.86 g
Philip III in the name of Alexander III
Price 1751
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An AR Tetradrachm struck 328-320 B.C. in Arados
Obverse: Head of Herakles right, wearing lionskin headdress.

Reverse: AΛEΞANΔΡOY - BAΣIΛEΩΣ / AP - Zeus seated left, holding eagle on extended arm, legs uncrossed, long caduceus in left field, AP city monogram beneath chair.

Diameter: 26.8 mm
Die Orientation: 11 H
Weight: 17.04 g
No notes for this coin
Price 3332.
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An AR Drachm struck c. 323 - 319 BC in Magnesia ad Maeandrum
Obverse: Head of Herakles right, wearing Nemean lion scalp headdress

Reverse: ΦIΛIΠΠOY / Zeus seated left on throne without back, nude to waist, himation around hips and legs, right leg forward, feet on footstool, eagle in extended right hand, long scepter vertical behind in left hand, monogram below throne

Diameter: 16.9 mm
Die Orientation: 0 H
Weight: 3.88 g
Struck under Menander or Kleito. VF. Attractive style, toned, porous, light marks and scratches. Struck in the name of King Philip III Arrhidaeus, Alexander the Great's half-brother. Philip III and Alexander's infant son, Alexander IV, were made joint kings after Alexander's death. Philip was the bastard son of Philip II and a dancer, Philinna of Larissa. Alexander the Great's mother, Olympias, allegedly poisoned her stepson Philip III as a child, leaving him mentally disabled, eliminating him as a rival to Alexander. Neither Philip III nor Alexander IV was capable of actual rule and both were selected only to serve as pawns. The regents held power, while Philip III was actually imprisoned. In 317, Olympias had Philip murdered in an attempt to ensure the rule of her grandson.
Price P57, Müller Alexander P89a, SNG Alpha Bank 857
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An AR Tetradrachm struck c. 323-317 BC in Babylon
Obverse: Alexander III depicted as Heracles facing right, wearing the Nemean lion skin as a headdress

Reverse: Zeus seated on throne holding an eagle and scepter, wheel to left, monogram below throne, Greek text to right (ΦΙΛΙΠΠOY) and below throne (ΒΑΣΙΛΕΩΣ)

Diameter: 26 mm
Die Orientation: -
Weight: 17.15 g
Text below throne is mostly off of the flan
Price P200
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An AR Tetradrachm struck 323-317 B.C. in Arados
Obverse: Head of young Heracles right clad in a lion's skin headdress.

Reverse: ΦIΛIΠΠOY / BAΣIΛEΩΣ - Zeus seated right, holding an eagle, Iota below throne, and prow of a galley, lamda Y in left field.

Diameter: 28 mm
Die Orientation: 12 H
Weight: 16.58 g
No notes for this coin
Price P158a; Sear 6749var.
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An AR Tetrobol struck 323-315 BC in Amphipolis
Obverse: head of Apollo wearing tainia right

Reverse: horseman riding right; ΦIΛIΠΠOY, M in wreath

Diameter: 13.5 mm
Die Orientation: -
Weight: 2.52 g
Struck by Philip III in the name of Philip II
Le Rider pl. 45, 33; SNG ANS 625-7; SNG Alpha Bank 300