I have recently purchased this coin. The seller said it is silver plated denarius of Septimius Severus.(17mm,2,97 gr). Dear friends and colleagues pls inform if this coin is ancient fake of it is barbarian imitation?
By the time Severus was acclaimed TRP III, he was already COS II. The reverse actually belongs to Gordian III. A contemporary counterfeit, c. 240s. If you can see base metal in the holes, then a fourrée (plated). Certainly more interesting than most official coins of either Severus or Gordian!
These Lipanoff dies were all published by Dr. I. Prokopov, Sofia in 2004. This 88 page booklet is available for about $20. He also followed this up with a further book in 2006 exposing a range of pseudo hoards found in Bulgaria.
The Prokopov books are available as free PDF downloads. Check academia.edu and the publisher's website. It may also be helpful to search CCCHBulg (Coin Collections and Coin Hoards from Bulgaria) which is the series to which these titles belong.