A copper-alloy seal-box lid of the Roman period.
The lid is vesica-shaped, with an incomplete hinge lug at one end. The top is divided into four quadrants by a cross with a circle at its centre. In the quadrants, and at the centre of the circle, there are five small rings, the centres of which were originally filled with enamel. It is likely that the quadrants themselves were also enamelled, as was the annulus between the central ring and circle. Traces of enamel, however, survive only in the annulus and one of the rings.