I have a Petri E.Bn rangefinder with the 4.5cm f/1.9 Orikkor lens and it's a very nice user camera. All mechanical, no batteries but has an old "bug-eye' selenium cell light meter which still works! Sort of. Fun to use and takes excellent pictures. My wife brought it home from an auction; she paid $4 or $7 for it, I can't recall.