Vintage  1940's  CASE  Tested XX Two Blade Black Composition Dogleg Jack / Mini Trapper measuring 3 1/2" closed as shown in our photos. We believe this is Pattern # 2207 from what little research we have had time to do. Hopefully if this is not the case a collector will lend some assistance to correctly identify this old Case pocket knife. Check all of our photos to be sure it meets your satisfaction to add to your collection.  Please feel free to contact us with any help or if we can answer any other question or concern....Should make a great old knife for any Case knife collection.