lens mount question

[nikki3030]

i bought a carl zeiss jena 135mm sonnar f4 at a car boot sale for €25 euro .Lens seems to be in good condition but I was told it was a contax mount.Now having researched it im not so sure.it seems to have a screw thread as well as a bayonet so i really dont know what adapter to get, maybe someone would recognise the mount and let me know ,thanks
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[David Hughes]

Hi,

It looks like a Kiev mount to me, which was a copy of the Contax one but I've little experience of them apart from a few in the display cabinet.

Regards, David

 

[Grytpype]

You have darn good car-boot-sales over there. I'm beginning to think I need an Irish holiday!

 

[sevo]

That would be Contax rangefinder mount (as cloned on the Kiev) - Jena never made any with the similar but incompatible Nikon RF mount.