Watch List notes:

Celtic World. Celts in Eastern Europe. Debased AR Tetradrachm, c. 2nd century BC. D/ Celticized laureate and bearded head of Zeus right. R/ Stylized rider on horseback left; crescent behind. Cf. Göbl, OTA pl. 36, 442/2; cf. Castelin 1339. AR. g. 7.60 mm. 24.00 RR. Very rare. Blackish patina, turquoise spots on obverse. VF.