I have read much on this while I was actively pursuing old Case Knives. Basically (and it ain't 100% clear) if the knife is numbered 6445 it was made by Case in their plant, and is quite heavy duty. If it is numbered 640045R it was contracted to Camillus and made by either Camillus or Ulster. I have two versions of the Case contract knives (but never did find a nice Case built 6445). Finally you have the Case Junior Scout (104090R SS shown here) which I understand was built by Queen. You will notice that the 640045R last year of production was 2006 (right when Camillus shut down) and the Junior lasted longer, until Queen shut down. I have some pictures somewhere I will come back and post after I find them. OH