Improved Proposal:
A good deal of the Roman utensils and weapons found in Germanic graves are loot from around Capua given as payment by Spartacus to the Cilician pirates, allies of Mithridates in the war, for taking his army to Pontus (for a journey to Sicily, as Plutarch states
http://tinyurl.com/38kcgvw
local fishermen or boats from his presumptive Sicilian associates would have sufficed) and later taken by troops remaining loyal to Mithridates after the final debacle in 63 BCE to the Przeworsk culture, whence to the supposed Germanic Lubiesewo princely graves.
Torsten