This antique, circa 1898, Joseph Levi & Co. London Leviathan Rapid Rectilinear 7 ½" (190mm) f/8 7x5 Brass large format lens comes with its mounting ring. Its rear diameter is 1 ¼". There are a couple of light scuffs on its exterior, and there is a very light haze inside of it. Its aperture adjustment wheel is loose and can be pulled apart (please see photos). It is fully functional. Its lass is clear of any fungus or separation.
