[Arran]

From my experience and personal observation you would be better off selling the unit as it is whole rather then parting it out as most of the parts are only useful for other Philco sets of the same era. What typically happens when you part out something is people will buy a few small select pieces and leave you stuck with the rest. If you were in my area I would be interested in having a look at this thing, but see if you can find the phonograph platter. The good news is that Capehart made record changers for other companies too, Majestic radios as well I think, so it may be possible to find the missing parts from a set in even worse shape.
Regards
Arran