The results of this type of thread are always clear as mud.

That said, for that specific playfield in the picture I would pull all the plastics and posts, vacuum the excess debris, spray a small amount of Novus 1 on a soft cloth and do an initial wiping of the heavy grime, wipe dry with new cloth, then I would go section by section with small amounts of Novus 2 on soft cloth, re-wipe/buff with a new clean soft cloth, then go nuts with the carnuba wax. Making sure to clean all the "cleaners/polishers" off the playfield completely between steps.

I tried alcohol and ME on some stubborn spots in the past and felt that it dulled the finish...plus 1 wipe too many with a ME and your paint is gone forever.

These 40-50 year old games are going to have some blemishes and checking etc. I wouldn't go nuts in the pursuit of perfection you'll end up screwing it up worse.