[Arran]

There is a somewhat notorious seller on a radio selling website that I shall not name, that was trying to sell a Philco 650 in a homebrew cabinet as a "rare factory offering". I think he finally realized what it was, gave up, and posted it on fleabay again. Philco never offered a 650 in any cabinet with Oak plywood panels, and their cabinet makers certainly would not have inverted the grain of the walnut pilaster on one side of the front panel.
There is also a chassis out of a late 40s Sparton Radio-Phono combo unit installed in a very amateurish and ugly custom cabinet for some ridiculous price as well. However in that case they do declare it as being in a custom cabinet, but unlike fleabay you have absolutely no guarantees if someone misrepresents a product, even though they are often priced much higher.
Regards
Arran