Resurrecting this thread; hope mskovacs is still around...
You state "The front element on my Avus is a two element assembly. The name plate comes off with a pin face spanner and the elements come apart so they can be cleaned inbetween."
I dont' see any holes in the face of my front element lens retainer. Was your lens a Skopar?
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The nameplate retaining ring unscrews, and the lens elements come out. Later models, I believe have notches for a lens spanner. Earlier ones like yours come off with the appropriately sized rubber friction tool (I forget what they’re called - looks like a rubber socket)....or you can improvise with the right size socket from a mechanics tool set (or anything rigid the correct diameter), and a rubber band. They usually come right off, but some may need extra attention, like a very, very minuscule partial drop of light penetrating oil in the threads....hope this helps. It should easily come off. I once removed one with 2 soft pencil erasers.
Dial Set Compur CLA
in Classic Manual Film Cameras
Posted
The nameplate retaining ring unscrews, and the lens elements come out. Later models, I believe have notches for a lens spanner. Earlier ones like yours come off with the appropriately sized rubber friction tool (I forget what they’re called - looks like a rubber socket)....or you can improvise with the right size socket from a mechanics tool set (or anything rigid the correct diameter), and a rubber band. They usually come right off, but some may need extra attention, like a very, very minuscule partial drop of light penetrating oil in the threads....hope this helps. It should easily come off. I once removed one with 2 soft pencil erasers.