Vintage Mulco Women's Gold Filled Band 15 Jewel Swiss Made Watch Not Working

Beautiful watch, 1/20 10K gold filled band. Stainless Steel Case. it says Fond Acier Inoxydable which means Stainless Steel Back in French. The band is broken, but looks like an easy fix if you are handy with a soldering iron. The watch does not work. We wound it and tried but no luck. I did open the back, it has the signatures of at least 2 repairs that were made at some point in the past so it did work at one time. Lovely watch. Thanks for looking.