This is my wife's genuine Cartier Panthere it was a present 22 years ago, almost daily use and the strap has broken, right where it connects to the watch, I have looked at how it has been put together and there is no screws or openings to pass the retaining pin that holds the links together. Somehow this retaining pin has been put in place magically and now one side has snapped. Any ideas how to repair this?