The Battersea shield is a decorative sheet bronze shield probably dating to before the first century AD. Found in the River Thames in the UK, it is decorated with repoussé decoration and enamel. The decoration is typically Celtic in terms of art style consisting of circles and spirals. It may not have been used in battle, but was probably created as an offering to the Celtic river spirits.Battersea Shield: A full length image of the Battersea shield.