That lens was made by Cooke for the Bell & Howell Foton camera.
That camera turned out to be a bit of an overpriced flop at 700 USD in 1948 so a well known US camera store bought the surplus lenses and had them mounted in a roughly made aluminium helical body in LTM in Italy (and even a few were made to fit the Contax RF camera) and sold them with Leica cameras .. as there was some loophole where this camera store could sell a new Leica body with a non Leica lens for much less money than Leitz dictated to their US dealers for the usual Leica with a Leitz lens in the early 1950s.