Bronze follis, 23mm, 4.44gm, issued AD 310-312 Londinium mint.
Obv: CONSTANTINVS PF AVG, Laureate, cuirassed bust right.
Rev: SOLI INVICTO COMITI (PLN in ex.), Sol standing left, raising right hand and holding up globe, star in right field.
References: Sear 16048, RIC 234.
This coin fits the following collection focus(es): Ancient British.