I think I was the first one here to mention ARAX as a viable source for lens polishing and recoating. The early coatings on Leica lenses are very soft. The lens can look like the surface of the moon, but all the damage usually resides in the coating. Don't assume that "polish" will dramatically affect the lens formula, as it won't, particularly if the "polish" is mostly removing the old coating. I have had three front lens elements from Leica lenses polished and re-coated by ARAX and they all turned out perfect.
These were all lenses that had single front elements, rather than a cemented pair for a front element. I wonder how Gevorg at ARAX would handle the "cemented pair" issue? I also wonder how he would handle front elements that are bonded to a metal ring, rather than being retained by a threaded ring. I believe all of his optical work is done at a commercial lens manufacturing plant where he has contacts. The same optical works that provides lens elements for Arsenal made cameras and Binoculars.
That is why sometimes it takes a few weeks after he gets the glass, as he has to wait until the plant has a coating run scheduled, which is not every day, or every week.
