I bought this coin months ago, but I can fully enjoy it only today.
I immediately recognized it was from Ticinum mint (Aquileia is also possible), but It appeared immediately evident it needed a good cleaning and could improve a lot.
So, this is my before/after pictures. The restorator did a good job IMHO.
OBVERSE
CONSTANTINVSPFAVG [CONSTANTINVS P F AVG]; bust r., laur., cuir.
REVERSE
SOLIINVICTOCOMITI [SOLI INVICTO COMITI]; bust of Sol r., radiate, draped and cuirassed, seen from rear.
RIC VI TICINUM —
Lech lists some specimens in his pages.
20mm x 2,93 gr