I just happen to know the story behind my M2.
It was purchased by a cousin of the person I bought it from. He was a professional photographer in the 1950s, and bought my very early M2 new. When Charlie, the guy I bought it from, went through the USAF academy, it was given to him as a graduation present. That was in 1960.
The camera was used for a spell, and sometime around 1970 it was dropped and assumed not to work any longer. It got closeted, and after Charlie served a full career and retired a lieutenant colonel, he came to a local college. Just about a year and a half ago was hauled out cause Charlie knew someone at work that liked old cameras (me). After playing with it, and, I think, gushing over how cool it was, he gave it to me. I insisted on giving him $100 for it.
I am the third owner, and I sent it off for a full CLA, gave it two new lenses (the original Leica Elmar 50/2.8 collapsible has a fogged front element) and lots of papering, including a brand new Verdigris leather kit from cameraleather.com to replace the cracked and chipping vulcanite.
I'll get a Luigi strap for it someday, possibly along with a new half-case, cause the Leica full case has seen better days. I had it repaired at a shoe shop nearby. It's cumbersome to use, but I love what it says on the inside.
"Cadet Charles T"