I’ve always had a soft spot for P-38s (the guns, not the can openers, as I find the longer P-51 type a much better form of the latter and don’t even get me into the P-38 Lightning) since I was a kid.
With that, I had the great opportunity recently while in the GDC Vault to find examples made by all three WWII makers– Walther, Spreewerk, and Mauser– as well as some Cold War-era West German Ulm-marked guns.
For insights into how to tell them apart and what to look for, check out my column at Guns.com. https://www.guns.com/news/2019/12/04/the-world-of-german-p-38s-walther-mauser-spreewerk-and-otherwise