All the signs are that you have a good basis for restoration, as others have said, the set will require replacement of all wax capacitors and electrolitics.
It should be quite straightforward given that you have done similar work on valve radios.
As you probably know, you will need a standards converter to use the set, these are not cheap, but a must if you want to watch a 405 line set.
I reckon your set was working fine when retired!
Mark