Bausch & Lomb Kodak Rapid Rectilinear 5 inch f8 lens

This is a very old Bausch & Lomb Kodak Rapid Rectilinear 5 inch f8 lens, so old that the apertures are marked in Universal System stops (they correspond to f8-f45). Good optics, working shutter. Should cover at least 6x9cm, maybe more. Rear element thread