Please Help with this Ancient [επιλυμένο]

I imagine it's some sort of Ancient Greek coin but I haven't taken the dive into ancients yet so If anyone could please help me I would really appreciate it and if there is a link on here even better.



The diameter is 15.5mm
The weight is 1.9g
Thank you again for any help
Matt

Roman coin - not sure which Constantine member

Gloria Exercitus (two soldiers, one standard)
DN CONSTAN-[?]
GLOR-IAEXERC-ITVS
SMK?
Cyzicus mint

This should be the correct one
https://en.numista.com/catalogue/pieces50035.html

Thank you
Matt