I'm thinking this might be a Tiberius II Constantine Follis, maybe Nicomedia mint (I see something that doesn't look like a C on the left below the value). Year III. I keep looking for something similar but am not able to find anything online and don't have a catalogue of byzantine coins (If anyone does and wants to share, that would be amazing).
Anyway, I struggle to figure out what it says on the obverse, but somehow it doesn't match the usual inscription DN TIB CONSTAN PP AVG...




27mm, 10.28g
Any thoughts?