This coin is identical to RIC 382 except it does not have the left hand visible, holding a parazonium. It is in Alten & Zschucke RMBT as #100
Other examples here-
http://www.forumancientcoins.com/notinric/7tri382v.htmlConstantine II
A.D. 322- 323
19mm 3.0gm
CONSTANTINVS IVN NOB C; laureate and cuirassed bust left, Victory on globe in r. hand.
BEATA TRAN-QVILLITAS; globe set on altar inscribed VO/TIS/XX; above, three stars.
In ex. •PTR•
cf. RIC VII Trier 382; RMBT 100