Nummus - Constantinus I SOLI INVICTO COMITI, C | S, Rome

RIC VII Rome 40 dates to the period immediately following Constantine's defeat of Maxentius at the Milvian Bridge in 312, when the western mints were reorienting their output around the new sole ruler. The Sol Invictus reverse type dominated Constantinian bronze coinage through much of this decade — Constantine did not abandon the sun god iconography suddenly or cleanly, and this issue sits squarely in that transitional phase before Christian symbolism began displacing it. The C and S flanking the exergue are officina marks identifying the third and — depending on how one reads the sequence — potentially a secondary workshop within the Rome mint.