Rare & very nice nos Delco/Oldsmobile V8 points distributor vacuum advance #1973418, used on various cars, mostly automatic trans equipped. Please research part # if you're uncertain that is correct for your car. I tested it with a vacuum gauge and it holds solid. The plated finish is very nice, it's been stored in my home since purchasing many years ago. $75 + 6 shipping in the 48 states. Paypal preferred.