With that ? T letters either side of the standing figure,
maybe the ? is an F letter >
https://www.cgb.fr/constantin-ier-le-grand-follis-ou-nummus-ttb-,brm_487160,a.html
IMP CONSTANTINVS PF AVG.
Laureate, draped and cuirassed bust of Constantine I Augustus facing right.
“Imperator Constantinus Pius Felix Augustus”
(Emperor Constantine, pious, fortunate, Augustus).
SOLI INVI-CTO COMITI / F|T// PLG.
Sol (the Sun) radiant, naked with cloak over shoulder, standing left,
raising right hand and holding a globe in left.
“SOLI INVICTO COMITI” (To the companion, the invincible Sun).