All About Pocket Knives

Here is my beat and battered WWII USN (I would also assume USMC as well?) large folding knife that was included in some of the Aircrew's Survival Kits. I cannot find any markings what so ever anywhere on this knife. All I know is seeing them in some photos of USN Aircrew Survival Kits from WWII. It has one large blade that locks with the inner liner, the other blade is a saw. My Dad was a gunner in a TBM Avenger and he recognised this knife. Sometime in the near future I will a photo of his Case XX Machete he brought back following the War. But for the time being I will post this photo.
Mark

At least two companies that I know of manufactured those knives and there were probably more.The folding machete was also made by at least four companies.I have one by Colonial and another by United of Grand Rapids Michigan.The saw blades are slightly different and the United one has a black coating on the metal(perhaps black passivate?).
The machetes were made by Case,Cattaraugus,,Camillus,and Imperial.The Imperial had a different styled handle from the others but the blades were similar.I have a Case and a Cattaraugus.

Here is another photo
moss