I am trying to find a reference for this coin...if there is one.
Salonina
Æ Antoninianus
A.D. 253-268
20x21mm 3.5gm
SALONINA AVG, diademed draped bust right on crescent.
PVDICITIA AVG, Pudicitia seated left, raising veil and holding sceptre.
I only saw examples with VI in exergue. The only ones I saw like this (except they were in silver) with nothing in the exergue were for other empresses- Julia Maesa, Herennia Etruscilla and Otacilia Severa. Maybe this one is unrecorded or an earlier die from another Empress was used?
Edit- It is RIC V Rome 25