Watch List notes:

CENTRAL EUROPE, Helvetii(?). Early-mid 3rd century BC. AV Stater (19.5mm, 8.58 g, 12h). Imitating Philip II of Macedon. Gamshurst type. Head of Apollo right, wearing laurel wreath / ΦIΛIΠΠOY, charioteer, holding kentron in right hand, reins in left, driving biga right; KA monogram below. Cf. Le Rider 620 (official issue); otherwise, unpublished in the standard references. A few surface marks, two scuffs on reverse. Good VF. Very rare variety, apparently unpublished.