Disassembling, cleaning, lubricating 1979 Russian Helios-44M #ASMR

ASMR ahead. My first time disassembling a vintage lens, or any lens for that matter. The Helios is already in good condition, except for the focusing which I found to be quite stiff in certain part. Turns out that the grease has already dried up almost completely. Optics are in very good condition without any fungus, except for a few specs of dusts and dots.

I gave the optics some light cleaning. Removed the old grease and reapplied a new layer of helicoid grease.

However I find that most Russian lenses comes with micro scratches on the optics?

What is your opinion?

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