Year?
I would guess around 1930, give or take a decade or three. The wheels look newer than that, and look like they might be original. So after 1930, then. I wouldn't be surprised if someone somewhere still makes these!
As I said it seems familiar, and I wonder if the last time I saw those finials it was a restoration project?
The nice thing with plate cameras for studio use was that they could take all sizes of plates up to the maximum, so even if the photographer only made small CDV's he would still get a 24x30cm plate camera! So just about any lens you can possibly think of, in just about any focal length. It would look nice with a 420mm Aplanat - a great portrait lens for the full format.