This bust type (Q) is not in RIC or Huvelin with this obverse legend (1g), it should come after RIC VI London 181
Constantine I
A.D. 310-312
23mm 4.8gm
CONSTANTI-NVS AV[G]; laureate and cuirassed bust left, holding eagle tipped scepter.
COMITI-AVGG NN; Sol standing left, chlamys across left shoulder, right hand holding up globe, whip in left, in right field star.
In ex. PLN
RIC VI London –