I bought an M2 privately, in Indonesia, not long ago. My M2 has a lever-type rewind (as opposed to button-type) and it has a self-timer. It dates from 1963, according to its serial number. It came with a Konica Hexanon 50mm f/2 lens that is in excellent condition. I'm looking forward to seeing how well this lens performs, because I've heard some very good things about it.
The M2 seems to be fine, mechanically, and everything fits and works the way it's supposed to. The VF is very clear and the RF patch is easy to see. Framelines snap into place as they should and are in good condition. I think the RF is accurate. Shutter speeds seems right, but the shutter is a bit noisier than with my M6TTLs. The manually reset exposure counter is a bit stiff to turn but I don't know if that's normal.
Cosmetically, my M2 is a bit ugly. The chrome plating on both the top plate and the bottom plate, around the tripod bush, is very scuffed. The paint around the rear door is also a bit chipped. However, the vulcanite is intact, for which I am grateful as it seems that's often not the case with old M3s and M2s.
Because I've only had it for a short time, I haven't had any results from it yet. However, I've bought a Selonic "Flashmaster" L-308B hand-held light meter for use with it. Hopefully, it won't be long before I get some results. I've got my fingers crossed!