Tool is E/655 army proofed. Tool will be correct for late 1940 till 1942 German Luger pistols. If your Luger has similar proof on the slide - this is one that you need.
As you can see tool was slightly altered on one side - still 100% functional with this small modification to accommodate also narrow screws. Tool is 100% original - WWII production. Nd use pictures as best description.
Check my other auctions for German WWII stuff and parts.