Constantine Coin - real or fake?

weight 2.2 g approx. 

Diameter 19 mm approx.

This appears to be this coin:

N#153236

Is it too well preserved? Is it a fake or the real thing? I have several “Roman” coins, so it would be henlpful to have some pointers in how to decide.

Is real but not nicomedia

I think treveri

N#44977

thank you that's helpful :-)