Thanks Millimoo, I founed another image of it, & looks exactly the same. I found it on a Roman villa site in Dorset, it seems a very early coin for the area!! Did they reuse denarii? Could this coin have been used long after Domitian was dead? As for cleaning is there anyone I can send it to that can clean it as this & a Richard II/ Edward III farthing are my prize detector finds at the moment & want to do whatever to preserve it from being ruined. Cheers Chris