This coin has a legend for Vetranio, but the bust, with no beard, looks like Constantius II. The second coin below is a typical Vetranio from Thessalonica. I have seen a few coins of Vetranio from Siscia without beard, the last picture is an example sold by CNG.
Vetranio
A.D. 350
22x24mm 3.5gm
D N VETRANIO P F AVG; laureate, draped & cuirassed bust right.
CONCORDIA MILITVM; Vetranio standing facing, holding labarum inscribed with Chi-Rho in each hand, star above, A in left field, B in right.
In ex. • TS∆ •
RIC VIII Thessalonica 132
a related article-
ALAN DEARN The Numismatic Chronicle (2003)The Coinage of Vetranio: Imperial Representation and the Memory of Constantine the Great
