Watch List notes:

Macedonian Kingdom. Philip II. 359-336 B.C. AE unit (17.41 mm, 6.67 g, 2 h). Uncertain Macedonian mint. Scarce variety. Head of Apollo left, waering tainia / ΦIΛIΠΠOY, youth on horseback prancing left; lions head left below. SNG ANS 872-4 corr.. VF. Very Rare. 

The correction notes that it is a lions head and not the facing head of Helios.