What is proper name for this lens mount?

[gorbas]

I like to mount 3rd, 4th and 5th party lenses on my Hasselblad. Recently I was lucky and on the last Camera Swap here in Vancouver, BC, found this lens mount. I know for it's existance just from ancient photo illustration. What is proper name for it? Anybody here using it? What is present market value (yes, I know, it's hard to tell)

Thank you in advance!

 

[BrianShaw]

Universal iris lens mount (clamp)

The only people I know using them are large format photographers using ancient lenses. Don't know how it could be used on a Hassy.

It's worth whatever you paid for it.

 

[gorbas]

Thank you Brian!
Its holding lens a little bit wobbly comparing with regular mounts. Most likely I will mount it on Hasselblad via custom adapter.
Then, price was right!

 

[MDR]

The universal iris mount is usually quiet strong and without wobble. An adapter makes more sense when used on a FP shutter hassy than a inter lens shutter hassy. Good luck with your endeavor.

 

[gorbas]

Thank you MDR!
I'm using it with 2000FCW. But it can be used with 500 series and little bit of imagination and right subjects.