celtic penannular brooch ireland 5-6th century in copper 50mm diameter 6mm thick

a hand forged copper penannular brooch conforming to a Fowler D7, made from 6mm diameter rod with a 3mm diameter pin, based on the 5-6th century celtic find from Ballycatteen in Ireland, this is a big chunky penannular, made in Sheffield England by Daegrad tools