Roman coin which I believe there is enough detail to work out is a copper bronze alloy coin of Marcus Piavonius Victorinus. Ruler of Great Britain and Gaul 269-271 AD. Obverse legend would read IMPC VICTORINUS PF AVG with a Radiate bus of the Emperor. Reverse shows Providence standing left holding Cornucopiae and legend PROVIDENTIA AVG. Please see photos for further assessment / appraisal.