Celtic World. Celtic, Eastern Europe. Fourréé Denarius, imitating Roman Republic, c. 1st century BC. D/ Helmeted head of Roma right; below chin, X; behind, X. R/ Victory in triga right; above, ON (inverted); in exergue, blundered legend. AR/AE. g. 3.03 mm. 18.00 R. Rare. Small breaks in plating. VF.