The Star camera that started this thread looks like a 5x7 rather then a 4x5 like was already mentioned. I've head of them making them and mounting a 4x5 revolving back on them since 4x5 film was more commonly used by the photographers using these cameras. The biggest one I've seen was a 5x7 with the most absurdly large lens on it. The thing pretty much required two people to move it.
Anyway, if anyone knows anyone interested I'm actually selling a relatively reasonably sized 4x5 Big Bertha right now. I tried offering it to the APUGers at a discount first but now its up on the auction site.