I recently got my hands on my old 85mm 1.8 Super-Multi-Coated Takumar. (put "SMC" in title to save space.) Unfortunately it has lived for most of the last 20 years in as close as you can get to a basement above ground.
Mechanically it's fine. (Kudos to Asahi engineers!) And the front surface under the filter is clean. The rear surface cleaned up easily, but there is fungus on at least 2 of the inner surfaces.
Is this lens worth getting serviced? Is that even possible? I owned this lens for more than a decade and it was, in hindsight, wonderfull. It's just that I was switching over to Olympus.