Auto Revuenon 55mm 1,4 - stuck helicoid

[Gonzoo]

I've got a problem with this gem. Its focus ring is stuck. I can see no falling damage so I think it is just sticky grease.

Anybody got an idea how dismantle this lens? Are there screws behind the filter ring?

[Attila]

You need to remove name ring from front and behind this ring you can find metal rings what you can remove with spanner wrench.
Name ring removable by gum bath tub plug or lens tool looks like bath tub don't know it's name