Watch List notes:

CELTIC, Northwest Gaul. Uncertain tribe. Circa 3rd-2nd century BC. Hemistater (Electrum, 16 mm, 2.84 g, 10 h), "three lances" type, imitating staters of Philip II. Celticized laureate head of Apollo to right, with curly hair. Rev. Charioteer, of strangely simian form, holding spear in his right hand and reins in his left, driving horse to right; spear below and before horse. Delestrée & Tache 106 (same dies). Delestrée, Revue Numismatique 2001, pl X, 23. Very rare, possibly the third known example. Good very fine.
From the Cologny Collection.