Quote Originally Posted by firecracker
"... since it's an old vintage lens, I'm not sure if the lens elements can be re-coated. Or that might change the quality drastically or something.

So, what do you think...?"
I use an old (uncoated) Tessar on my 4x5. The lack of a coating hasn't stopped me at all.

OTOH, if it ain't broke, why fix it! You've described what the lens looks like but... what do the images look like? If none of this stuff affects the images, why not just leave well enough alone?