This brooch is classified as Weetch’s type 30.C and is decorated with an openwork design representing a bird in profile. For more information on Scandinavian jewellery in England check out our blog: Brooches, Pendants and Pins: Scandinavian Dress Accessories in England.
You can see the original at Private Ownership.
(c) Portable Antiquities Scheme, CC BY-SA 4.0
Portable Antiquities Scheme
Brooches, Pendants and Pins: Scandinavian Dress Accessories in England.
Kershaw, Jane F. Viking identities: Scandinavian jewellery in England. (Oxford: Oxford University Press, 2013), p. 20-25.