Thread holding zipper is gone in corner, see pics.  You could just put a new zipper on it.

This vintage Craftsman Handy Kit leather bag is perfect for keeping all your essential tools organized and easily accessible. The bag features a convenient zipper closure and measures 10" X 5-1/2". Made of high-quality leather, this bag is durable and built to last.

The bag is designed to hold one piece of equipment and comes with a lifetime manufacturer warranty. Whether you're a professional or a DIY enthusiast, this handy kit bag is an essential tool for your collection. Use it to store and transport your tools with ease.