This coin is not in RIC for the reverse AVG instead of the normal AVGG.
Lech already has several examples on his page--
https://www.notinric.lechstepniewski.info/7arl337v.htmlConstantine I
A.D. 329
20mm
CONSTAN-TINVS AVG; rosette diademed, draped and cuirassed bust right.
VIRTV-S AVG; gateway with four turrets, star above; in fields T/F
in ex. PCONST
cf. RIC VII Arles 337