Using my T2 fitted with the stock coil on ploughed land flat as you like. I found an AE4 of Constantine 2nd A.D.337/340 reverse Two Soldiers with Two Standards minted at Trier Germany.I have been hoping for silver from this field !! I got it a 1932 KGV sixpence and a Victorian 6d 1890 not what I wanted.in silver rather I hoped for Roman period the last shot will show you the old geezer posting this stuff.