It's funny that this thread has morphed into another "lens thread". That was not my intent, but it's understandable. If you just go by the specs, it would appear there aren't a lot of ULF lenses out there. So, it's good to share first hand (or even second hand) knowledge.
It does remind me why I decided to dive into ULF. It all started when I got a 240mm Computar at a fairly reasonable price off eBay using "Buy It Now!". Once I had that lens, I needed to figure out what to do with it. I got the idea to "make" a 7x17 camera based on an ARCA-SWISS chassis, similar to my 4x10. Then I traded a different lens to a friend for a couple beautiful 7x17 film holders, then Kodak and Ilford offered to sell me all the 7x17 film I wanted. So, here I am, ready to give it a try - and it all started with that one lens.
So, my advice, if you ever see a 240mm Computar on eBay with an affordable "Buy It Now!" price, either snatch it up knowing that you will then need to buy a big camera, film holders, film, probably a sturdier tripod and head, a bigger pack, probably some more lenses, a new darkroom, a freezer to store your film, etc., or do the smart thing and run the other way. Even if the lens is free, it will cost you a fortune in the long run.
Kerry