This is a rare Dallmeyer Rapid Rectilinear lens with a brass exterior material and a maximum aperture of f/9. The lens has a focal length of 900mm and is designed for large format cameras. It was manufactured in London in 1868 and has a serial number of 49413.

The lens is in good working order with a unique vintage look. It comes with a lens cap and is ready to be used for your photography needs.