That looks in remarkable condition, Ken. Very little, if any, signs of rust. This probably means that the wound components will be in good condition.
If you are going to wind it up on a variac, may I suggest that you disconnect the primary of the EHT transformer initially. Later, while you're working on the set's signal side, remove the EHT rectifier and insulate the top cap connector well - clamp it in a plastic box or something similar as you'll need the EHT transformer connected for the TV valve heaters. I'm sorry if you already know how to suck eggs but there's nothing like too much care with these TVs!
