[Arran]

The cabinet looks like it was stripped and then just clear coated, perhaps the previous owner attempted to darken the solid wood parts with oil stain first but that never works. Hopefully the clear coat was lacquer and not poly, is so you can go over the solid parts with Mohawk tone spray. The grille cloth looks like it was either dry cleaned or replaced with a reproduction which is good.
As for the chassis I have not had the misfortune of working on one of these modular chassis Philcos but nobody that I know of likes working on them.
Regards
Arran