File:Late Iron Age copper alloy terret (FindID 280212).jpg

English: The cast bronze terret is incomplete and is slightly distorted, missing decoration at the apex, above the broken arms (as initially reported). The bar is of low oval section and the oval stops are enhanced with a central groove, worn on the interior. The hoop is of faceted tear-shaped section near the stops and thins to a D-shaped section at the apex. The top of the hoop has integral arms, which have both broken near the centre and it is was unclear whether the arms defined a sub-triangular shape or met and diverged again to define two opposing C arms. The arms are of triangular section and terminate in a rounded knop. The interior of the hoop has wear facets near and above the stops and beneath the horns. The surface has uneven patination with a dark green patina and areas of pale green and red-brown speckling.

The terret is of unusual form with the horned decoration and is difficult to parallel in the archaeological literature. The form does not easily correspond with Spratling's (1972) typology, being significantly different to the 'multi-knobbed terrets' of Group IV and the 'knobbed terrets' of group IX. The terret form is likely to date to the first century AD. A near-identical terret to the St Donat's example was recovered in 2002 at Penllyn in the Vale of Glamorgan (c. 10km to the north of this findspot) and was recoded with PAS (Database reference: NMGW-FD38C2) before being acquired by Amgueddfa Cymru - National Museum Wales. The Penllyn terret also has broken arms, in a similar position. The close similarity of form, together with the unusual style, may suggeast that the two terrets were produced by the same workshop or may even have formed part of the same terret group.