I got this switch with a 1958 lincoln convertible.  it doesn't come with the box but appears never to have been used   Still has both keys in little ring that a new switch would come with. I have seen other switches like this that list interchange as:

Replaces: FAB-11572A B5A-11572A FDH-11572A

Please be sure this is correct for you before Buying.

FITS:

1960 Mercury Comet

1958-59 Edsel

1960 Falcon

1952-59 Ford

1956-61 Ford Truck 

1956-59 Lincoln

1952-59 Mercury