This complete brooch belongs to Mackreth’s AESICA 1a series, a type in use from the mid 1st century AD through to the later 2nd century.

Brooches of this form are closely associated with the western and south-western regions of Roman Britain, where they appear to have been especially popular.

The upper bow is arched and broadens slightly as it descends towards the foot. Its edges terminate in globular knops, giving the brooch a distinctive, decorative outline. Two pronounced beaded ridges run down the bow, bordered by a raised beaded margin. Within these margins are the characteristic ‘eye’ mouldings – raised ovals or almonds that create a bold effect typical of this brooch type.

The lower bow forms a fantail, again decorated with spheroidal corner knops and edged with a beaded margin. The decoration here is arranged in a tripartite pattern of raised mouldings surrounding a central ring and pellet motif, a design widely used in Roman metalwork for both its symmetry and visual impact. The catchplate is embellished with simple zig-zag decoration.

Brooches of the AESICA 1 series reflect decorative complexity whilst still serving the practical purpose of fastening clothing.