Seiko alarm clock- How to fiix damaged battery contact spring ?

I found a very cool Seiko quartz alarm clock with a French face and case at a yard sale. They'd left the battery in and of course it leaked. In trying to clean the contact (spring?) I broke it. It seems like it would be a simple fix if I could just find a replacement, but as is obvious I don't even know the proper name for the part. I've searched the internet and can't seem to find just that part. What is it called, and is it possible to replace just that contact?

Sharon V.
September 2009