Rummaging around, I found a nice 5x7 tessar 1c from B&L-Zeiss.
Focal length seems to be 7 1/2", either 180mm or 190mm. The glass is pretty good, with no scratches and hardly even a cleaning mark. The iris turns smoothly and easily. The only thing "wrong" with it is that the front lens ring is way out of round; see the photo.
Comes with the mounting flange; currently mounted on a 4x4 board.
These are good lenses that don't get much respect. I'll price it at $65 + shipping, which should be $5 domestic.
Satisfaction guaranteed - purchase price refunded with no questions asked; just ship it back.
Charley