AUSTRIA 20 EURO SILVER PROOF COIN VIRUNUM*, 1st COIN of the SERIES called ROME on the DANUBE (18GRAMS / DIAMETER 34 MM/ .900 SILVER)with a NUMBERED CERTIFICATE of AUTHENTICITY**, ATTRACTIVELY BOXED. ISSUED MAY 2010. *Virunum was the capitalof the province of the pre – Roman Celtic kingdom of Noricium ( part of the present-day Austria ), founded by Emperor Claudius. This was situated on the main route from the Adriatic to the Danube, with a branch through south eastern Carinthia connecting Virunum with the famous Amber Route.**No 2 Certificate of Authenticity numbers are the same – the one you will receive is different than the one shown in our picture.