I'd say around $400 assuming it is working perfectly and has excellent
CRTs. If it's been used a lot, then it will be worth a lot less. The
picture should be razor sharp with no burn in.

It will be worthless for parts unless you happen to find someone who
needs a part from it at that time. Even then, used parts are worth a
tiny fraction of new parts. No one will want to store a huge TV until
they someday need a part from it.
Andy Cuffe

Many thanks.