01-26-2013, 11:19 PM
My Bing Crosby is a Canadian version called a 76A, and the bottom is just a piece of Masonite type hardboard held on using the same screws that hold the rubber feet on. There was never any evidence of there being a back on mine and nobody had ever removed the chassis since it left the factory from what I can tell. It's a very common model so finding a parts set shouldn't be a big deal if you need anything.
Regards
Arran
Regards
Arran