RIC 793 correlation to Alföldi.

VICT PROBI AVG NOSTRI
IMP C M AVR PROBVS AVG

Busts in RIC Busts not in RIC

Table XLV, Type 90

ς = cursive digamma

1 Radiate, draped and cuirassed bust right, seen from front.
1 -|ε//XXI

2 Radiate, draped and cuirassed bust right, seen from back.
2 -|ς //XXI
3 //XXIς