This coin is a RIC VII London 10 variation because of the pellet after the S in the reverse left field. Interestingly, the N of the mintmark looks like it was engraved over a partial N.
Lech already has the coin listed-
https://www.notinric.lechstepniewski.info/7lon10v-3.htmlConstantine I
A.D. 314
20x21mm 3.5g
IMP CONSTANTINVS AVG; laureate and cuirassed bust right.
SOLI INVICTO COMITI; Sol rad., stg. l., raising r. hand, globe in l., chlamys across l. shoulder; in l. field S •, in right F.
in ex. PLN
RIC VII London 10 var; LMCC 8.02.015 var