Victorinus legend

[Flav V]

Hello,

Im very active this time and i will continue during weeks. I  show interesting coins but the most interesting will come next week. Here is a coin wich obverse legend should be: IMP C VICTORINVS P F AVG . But after VICTORINVS i see a strange letter like I and then V ... the space between S and AVG is large and let me doubt of only P F.