RIC only lists this issue with II in the exergue. Gobl has an example though.
Salonina
AD 260- 268
Ӕ Antoninianus
19x20mm 3.8gm
SALONINA AVG; draped bust right, on crescent.
PIETAS AVG; Pietas standing left, sacrificing at altar, II in right field.
RIC V Siscia 79 var.; Gobl 1479