CELTIC, Lower Danube Region. 1st century BC. Silver Serrate Denarius. Imitating Roman Republican Moneyer L. Calpurnius Piso Frugi $260.00 May 18, 2008 Seller ancientcaesar CELTIC, Lower Danube Region. 1st century BC. Silver Serrate Denarius (21 mm. 4.11 gm). Imitating Roman Republican moneyer L. Calpurnius Piso Frugi. Laureate head of Apollo right, monogram behind / Horseman galloping right, rising right hand. Very Fine. Very Rare. 20481