I am trying to find information on the type of paint(s) and the process by which paint(s) were applied to the black Nikon microscopes vintage 1960's - 1970's (model Sk-E). I have several that I'd like to completely refurbish. I have automotive painting experience and have neccessary equipment to strip old paint off and apply high quality finishes. I want to use as much original material as possible. I do not want to powder coat as that will not duplicate the original appearance and durability. I've check with Nikon and even Zeiss (also had excellent black finished optics) with no luck. It seems that most people who could answer my questions are retired. I do not know if the microscope paints and processes were similar or identical to that of Nikon black cameras. Any info or leads is appreciated.