Lost silver Celtic bird brooch

I lost a silver celtic bird brooch on 12 December while delivering Christmas Cards in Redland, Henleaze, Clifton and Westbury Park. It is based on an illustration from the Book of Kells. My husband bought this for me on Iona in 1990., hence of great sentimental value. Reward offered for return. It is similar to, but not identical with the Tain silver brooch in the photograph.