Watch List notes:

CELTIC, Middle Danube. Pannonian region, 3rd century BC. Tetradrachm (Silver, 18 mm, 13.64 g, 7 h), imitating a tetradrachm of Philip II of Macedon. Celticized laureate head of Zeus to right. Rev. Horseman riding left, bird above horse's raised foreleg, rosette to upper right field. Unpublished variety, cf. Dembski 1100-1101 and Lanz 109, 36. Well centered in an extremely thick flan (only 18mm). Good very fine.