Macedon, Kings of. Philip II. 359-336 BC. AR 1/5th Tetradrachm. 323-315 BC. Amphipolis mint,  2.64 grams, 13.99 mm. 

Head of Apollo right, hair bound with taenia
Youth on horseback right.
Shield seen from the side below.

Le Rider pl. 46, 29. 

Courtesy of TimeLine Originals (www.time-lines.co.uk), March, 2011