This coin is not in RIC, it should come before RIC VII London 144.
The Bourton-on-the-Water hoard, which was found in England in 1970 consisted of some 2700 coins, had three examples of this type # 1464- 1466 -- Numismatic Chronicle 1973
Crispus
A.D. 318
20mm 3.6 gm
CRISPVS NOB CAES; laureate, draped and cuirassed bust.
SOLI INVICTO COMITI; Sol rad., stg. L., raising r. hand, Victory on globe in l., chlamys across l. shoulder,
Crescent in left field.
In ex. PLN
RIC VII London --