Here's another ex- Ex-Peter Weiß coin. This one has a workshop not in RIC; but there was an example illustrated in the Bikić-Do Hoard as #403.
http://www.notinric.lechstepniewski.info/7sis105.htmlThis coin might be the plate coin, except the weight given in Sirmium VIII is 3.65; while this coin weighs 2.8g. So, if not an error, at least a die match. There are weights given for two coins-- workshop Γ and Δ and the Γ is 2.8, so maybe transposed. Especially note the green encrustation in the mintmark on my coin and compare with the plate coin.
Licinius II
A.D. 319- 320
18mm 2.8g
LICINIVS IVN NOB CAES; laureate, draped and cuirassed bust right.
VICT•LAETAE PRINC PERP; two Victories stg., facing one another, together holding shield inscribed VOT PR on altar inscribed with an S.
In ex. ΔSIS•
RIC VII Siscia 105