This coin is not listed in RIC, but it is in Alten & Zschucke's Beata Tranquillitas from Trier 321-323.
Not in RIC exampleThough the coin is in poorly preserved condition, it looks like the left shoulder has some decoration. Trier armor is often depicted with large, intricately engraved shoulders, often depicting what some German collectors call
Trierer Pelzchen or "small fur from Trier" since it looks like the armor is trimmed with fur. On this coin though, it appears to be three figures, perhaps the three graces or maybe it is just elaborate tassels/ fringes, but it really looks more like figures. Maybe the engraver was confused by the large open area of the shoulder and thought it should have been engraved like a shield.
Constantine II
A.D. 322- 323
18x19mm 3.2gm
CONSTANTINVS IVN NOB C; laureate, draped and cuirassed bust left, holding victory on globe in right and spear over left shoulder.
BEATA TRANQVILLITAS; globe set on altar inscribed VO/TIS/XX; above, three stars.
In ex. dot STR dot
RIC VII Trier --
Alten & Zschucke #117