Originally Posted by gspell68
It's a very old M-72, probably from the 1940's. The re-inforced sidecar fender and the very triangular straight cut gusset re-inforcement near the rear plunger are the give aways (ones from the 50's had curvature in them). It could be from the war era or even from a different M-72 factory than IMZ like MMZ (Moscow Motor Works) or ΓMZ (GMZ - Gorky Motor Works) and others. KMZ (Dnepr) started M-72 production in the early 1950's, so you can probably rule that one out.
Definitely NOT a $2000 bike in anyone's dream! If he truly had a $2K, he's an idiot for not jumping on it, but I bet he's lying...
If it was a MMZ bike it wou'ld have neither the rear gussets nor the overarm on the sidecar. MMZ stopped production in 1941! IMZ continued the overarm sidecar up until 1955/6. If it was from the Great Patriotic War then the engine, gearcases and FD would be in cast iron, Care to add some more guesses?