Dfin
Well-known
JayC, welcome to Leica therapy. If you can get hold of a copy of Leica&Leicaflex Lenses by G. Rogliatti, there is a list of serial numbers in the back with which you should be able to date your lens,and thus match it to the approx. same year model body. The copy that I have is dated September 1984, I don`t know if there are later editions, sorry, best of luck with your seach for an M body.