This one just sold for $11.50...it was misdescribed as a SOLI INVICTO COMITI. The CLARITAS type is not listed for these field marks (cf RIC 120 for a Sol type) but is recorded for the next (cf RIC 124, crescent in left)
Lech already has an example on his
Not in RIC page Constantine I
A.D. 317
19mm 2.7gm
CONSTANTINVS PF AVG; laureate and cuirassed bust right.
CLARITAS REIPVBLICAE, Sol rad., raising r. hand, globe in l.; stg. l., chlamys across l. shoulder; in fields S over */ P.
In ex. PLN
RIC VII London –