Original sentence: The inscription on the milestone is: IMP [C] DO NO MARC CASSI: this incomplete text refers to the  emperor (Marcus Cassianus) Postumus, 258-68 AD (Collingwood, RIB no
Edited sentence: The inscription on the milestone is: IMP [C] DO NO MARC CASSI: this incomplete text refers to the Emperor (Marcus Cassianus) Postumus, 258-68 AD (Collingwood, RIB no