Hello, I saw another watch thread here people were responding to so hopefully this question isn't too retarded. Pic related is my grandfather's old watch. It runs fine, but the second hand doesn't turn. I think it has to do with this copper wire you can see in the upper part of the mechanism. Anyone know what that's for/what it might be replacing? Potential fix? I know nothing about watch mechanics but I have a good amount of small general tools and my day job is electronics repair so I'm not bad with my hands.