A handbook Museum of London Archaeology Service, London.
Outer surfaces can be unevenly and coarsely finished.
Forms Plates with plain rim and flat base. Inside may be decorated with groups of fine concentric rings. The name Marius appears frequently on both stamps and signatures, in some cases with another name. These are perhaps products of organized workshops and master-slave pairings as attested in the sigillata industry. Production in Italy may extend back back into the 2nd cent.