Tessar Fed

Hello,
I found this lens on a fake Leica from a Fed S 1d.
I tried it: that works.
But if you have details about this Tessar and the mounting, probably not original?...
By the serial number, this lens should be from the 1910s.
The distance ring itself comes from a Fed.

Amitiйs. Jacques.
http://www.ussrphoto.com/UserContent/2072011_Tessar-Fed 001.JPG


http://www.ussrphoto.com/UserContent/2072011_Tessar-Fed 002.JPG

Jacques, thank you for sharing, a very interesting hybrid indeed! It seems like the whole back part is from Fed, no? It's hard to tell from the picture...

Vlad, the back part comes from a Fed.
The intermediate ring has been calculated to focus correctly, for sure (28,8mm).
I already saw such mounts with other lenses at a Polish dealer's, I think.
Amitiйs. Jacques.

At
http://tele-pulse.cocolog-nifty.com/hibiomoukoto/angenieux/index.html
you can see funny adaptations as:
perfex velostigmat
pantachar
LP