Rapid Aplanat No3 Serie D. F8

[joaosantos19]

Hi,

Does anyone can helpe me getting more information about this lens?

Sapid Aplanat N.º3 Serie D. F8
Rath. Opt. Ind. Anst. vorm. Emil Rush Rathenow

I would like to learn more about this lens.
I did a search for the web but I didn't got so much information.
Someone knows something about it.

Thank you