Thanks Paul!
I google'd JML, and there is a thread in photo.net that talks about this same 165mm JML lens, seems a fun lens to play with, it is just so heavy!

Thanks Ernest!
I will google George Knight.

There is no flange, but I will try to fit it in a lens board, temporarily, just to check the focal length. With so many lenses in barrel, I need to find a packard shutter I guess.

You are right about the water house stop, I can follow its shape and make other stops too, at least one f22 and one f32.
Wenbiao