I see the lens
You would need at least two daylight sources at 120 degrees to get cartwheeling
Then you get to get farther away from the coin by getting screw on magnifying lenses
unless you have a 130mm lens or zoom
All my pictures are taken with a canon 8800 scanner
The very few coins it cannot handle are brilliant without contrast
So I tried Canon shooting them with a 18-55 zoom with two screw on lenses
and it took all afternoon for on coin one perfect shot
