What mount does this Zeiss Tessar 50mm f/2.8 have?

[godfatherofpolka]

I have this Zeiss Tessar 50mm f/2.8 lying around (see attached pictures). However, I don't know what mount this is for. According to http://vintage-camera-lenses.com/carl-zeiss-jena-tessar-50mm-2-8/ this lens was produced with the following mounts:

• M42 / Pentax mount
• Exa / Exakta mount
• Zeiss Ikon Bayonett Mount (BM mount)
• Praktina mount
• Altix-N mount

Looking at pictures of other lenses with those mounts, it doesn't seem to be any of these? (However, I'm not really familiar with most of these mounts, so I might be wrong). Thanks for helping me out!

 

[gorbas]

It was also made in Werra mount, but this is some other kind.

 

[godfatherofpolka]

Update: I think it's an Altix mount

I now have had another look around the internet, and, looking at http://www.ebay.de/itm/Carl-Zeiss-T...ix-Bajonett-/262186843437?hash=item3d0b8dbd2d it seems to me that this is an Altix mount (the trick seems to be googling for "altix mount" rather than "altix-n mount"...)

Can anyone confirm this?

Bonus question in case it is the Altix mount: Does anyone know an affordable adapter to any more common mount - doesn't really matter which one? I have seen there quite expensive adapters here http://www.altix-adapter.de/altix.html and there are some people doing conversions of such lenses, but I don't want to irreversible change the lens.

 

[summicron1]

Exakta mount, or something like one. Interesting.

 

[onre]

It's not Exakta mount, the wings are far too narrow.

 

[Aron]

To me it seems to be the Praktina breech lock mount which is very similar to the Pentacon Six mount, only the diameter is different.

 

[AgX]

The Praktina breech lock ring cut-outs seem to be longer than those wings. (Though that could be done to ease use.)

 

[Aron]

Thanks for the correction.

 

[AgX]

As I said, "seems", and "maybe because of".
It can be hard to be precice on defining a mount just on the monitor, even if one would try to work with a caliper.

On the other hand: how many mounts are there that have a breech lock ring at the camera-side?
And that this lens needs such seems obvious. ("seems" again...)