Tele-Ennaston 13,5cm

[Attila]

http://forum.mflenses.com/enna-muenchen-tele-ennaston-13-5-cm-f3-5-t8046,highlight,%2Bennaston.html
Rare or very rare lens.

[luisalegria]

Similar lens (also rare) was made for export to the US, to fit Argus C4 "Geiss" modification.

One of these days I will find one.

[Attila]

[luisalegria]

Yes, a rangefinder originally with fixed lens.

There was an after-market modification made by a firm called Geiss in Chicago that converted several thousand of the C4 to interchangeable lens, and they contracted with Enna to make the lenses.

http://cameraquest.com/arggeiss.htm

I have three of these special Geiss models, with some lenses. The two rarest lenses are the 135/3.5 and a 45/1.9, all from Enna. Your lens looks like these. Different lens hood and mount though.

Later Argus made their own interchangeable lens version of the C4 called the C44, also with Enna lenses, but a different and worse mount. There was no 135 for the C44 though.

[Attila]

Interesting reading thank you!