This is a nice coin for the type; but the main reason I found it interesting is that it came with a tag from Scott Uhrick, who went by Joviel online. He was very active 20 years ago in the uncleaned community and his website is still up.
https://www.joviel.com/main_frame.html
Constantine I
A.D. 336
Ӕ nummus 15x16mm 1.8g
CONSTANTI-NVS MAX AVG; rosette-diademed, draped and cuirassed bust right.
GLOR-IA EXERC-ITVS; Two soldiers helmeted, stg. facing one another, reversed spear in outer hands, inner hands on shields resting on the ground; between them one standard inscribed with a Chi-Rho.
in ex. PCONST
RIC VII Arles 394