Watch List notes:

The Roman Empire
Volusian, 251 – 253

Volusian has two portrait types, one without a beard, presumably an earlier type, and a second portrait type with a beard. AMP.

Antoninianus, Mediolanum 251-253, AR 3.32 g. IMP C C VIB VOLVSIANVS AVG Radiate, draped and cuirassed bust r. Rev. VIRTVS AVGGG Virtus standing r., holding spear in r. hand and shield in l. C 133. RIC 206. Good extremely fine
Here a portrait of Volusian without a beard, which seems more rare. AMP.