Carl Werner Zuellichau lens info

[Nodenwolf]

Good afternoon, dear forum members!
On the forum and collectiblend did not find information about such a German lens manufacturer.
Maybe someone has information in books dedicated to small German manufacturers?

Now I know 2 lenses from this manufacturer. both have no serial number and are found on the internet.

1-st Portrait-Monokel 50cm.


2-nd 50cm carl werner zuellichau probably aplanat. Its about f6.

the shape of the case suggests that it should have an iris diaphragm, but it does not have any mechanism.

I think the diaphragms were plug-in, but is it worth taking out the front lens for this? I do not think so.

Has anyone seen something like this? or other lenses of this mysterious Karl Werner from Zullichau?

[Nodenwolf]

I also found information that he is considered to be the developer of the pingoscope, about which there is also no information.

HELP!

[Per Madsen]

I also found information that he is considered to be the developer of the pingoscope, about which there is also no information.

HELP!

For photographing penguins ? >8->>