Siscia 19 mm, 2,66 g – Sear 17193 B★ , RIC VII Siscia 166 B★ – rated R4 “CONSTANTINVS IVN NOB C, laureate head right.
CAESARVM NOSTRORVM around VOT X within wreath.
Mintmark BSIS star.

RIC VII Siscia 166, rated R4.”