RIC does not list this bust type (F) with this obverse legend (1d). It should come after London 155. It is in Huevelin as #30.
Constantine I
A.D. 310-12
22mm 4.6gm
CONSTANTINVS PF AVG; bust right, laureate helmet and cuirassed.
COMITI AVGG NN; Sol standing left, chlamys falling from left shoulder, right holding up globe, left whip, star in right field.
in exergue PLN
RIC VI London --
It sold for $487.71