This is an original 1940 Buick Delco Distributor w/ Cap and Rotor.  Pretty good condition, looks like it may have been rebuilt at one time, but not sure if or how long ago that was-see photos.  Cap looks like it has not be used, but has some chips along the bottom edge-see photos.  Delco Book shows this fits 1940 Buick 60, 70, 80, 90 series (Century, Roadmaster and Limited).  Please check my other listings.