This bust type is not in RIC, but is in Die römische Münzserie Beata Tranquillitas in der Prägestätte Trier 321-323 (RMBT) as 17r (no. 87), which they describe as a variation of RIC 383, which has an I2 bust, which is laureate and draped, victory on globe in right, with scepter in left. I would not call this a variation, but a different bust type. Some might even call this one trabeate, but there is that somewhat indistinct and sometimes even arbitrary designation.
Constantine II
A.D. 322- 323
CONSTANTINVS IVN NOB C; laureate, draped and cuirassed, holding victory on globe in left and scepter in right.
BEATA TRANQVILLITAS; globe set on altar inscribed VO/TIS/XX; above, three stars.
In ex. dot STR dot