Washer, helmet or lorica segmentata washer

A copper-alloy washer with embossed rosette decoration. It is from a Roman soldier's armour or from a helmet. Lorica segmentata armour, also known as a segmental cuirass, was commonly worn by Roman legionary soldiers. It consisted of around 30 overlapping metal strips that were held together by leather straps, which covered the soldier's shoulders and torso. The armour had various buckles, washers, hinges and hooks to fasten it and connect its different parts. Many armour-related objects have been found on excavations in London, testifying to the presence of the Roman military.