Vintage Longines 1950's Automatic Stainless Steel Automatic Watch

Pre-owned. Runs and keeps time. Has normal wear. A couple spots on the sapphire at the bottom. Could be a parts watch. I believe the Dial is a 2220-P while the case back is marked 2305 SW. Please see photos for more details. If you have any questions please feel free to ask. If you have any information you'd like to share I'd love to hear from you.