nikkor 135mm f3.5 in mystery mount?

[darinwc]

Hi guys! Hope you could help me out.
I have a vintage Nikkor Q.C. 135mm f3.5 in a mount I am not familiar with.

Looks like an Exacta but I dont have one to rty it out. And it looks too small for exacta.

Any ideas?

 

[mdarnton]

Have you run through this page?
http://rick_oleson.tripod.com/index-99.html

It would be easier for you to do it than for us, because you have the lens in your hand. But I don't see it there.

What's a Pentacon/Praktica mount look like?

 

[darinwc]

Have you run through this page?
http://rick_oleson.tripod.com/index-99.html

It would be easier for you to do it than for us, because you have the lens in your hand.

Yes, but according to this: http://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html
the diameter of the opening is 46mm, and you can see in the 4th image that the diameter is closer to 35mm.

Could it be an Alpa? I think it is a SLR mount because I dont see any rangefinder coupling.. But I dont know if the timing is correct for that type on lens on an alpa.

 

[MartinCrabtree]

Rangefinder?

 

[aoresteen]

I'd try to put the lens on a bellows with a ground glass back and try to measure the register length when the lens focuses to infinity. That will help figure it out.

My guess would be Kodak Retina reflex maybe?

 

[onre]

It is an Exakta mount.

The page with list is wrong. I have an Exakta macro tube on my desk and the diameter is 36 mm, not 46 mm.

 

[darinwc]

Ah ha! It appears the mystery is solved. I did not know Nikon made this lens in other mounts. Or perhaps it was a custom made?

 

[onre]

I can assure you that this is the first Nikon lens with Exakta mount that I've ever seen.

 

[onre]

The Exakta lens list document tells me that this and a f/4,0 version are the only Nikkor lenses ever with Exakta mount. Apparently from '50s.

 

[darinwc]

Well since I don't have an Exakta, I'll be posting it for sale soon enough. I'll get some more pics. Hopefully someone will want it. Thanks for all the help!