EASTERN CELTS. 3rd-2nd century BC. Tetradrachm (Silver, 25mm, 11.88 g 11), imitating Philip II of Macedon. Celticized laureate head of Zeus to right. Rev. Horseman to right; below, thunderbolt. Cf. Lanz 372. Two different countermarks on reverse. Very fine.
From the collection of a Swiss mathematician, formed in the 1980s.