This is one wild and crazy 6v ignition coil. It's an AMPRO Super Coil. Very impressive! This is a late-1940's, early-1950's hot rod equipment piece I remember being advertised in car books back in the day. Yes, I am also "vintage". This finned aluminum coil is in good condition. Impressive size, measuring 6-1/2" high by 3-1/4" in diameter.
I believe it can be run in a 12v system, with the addition of a ignition ballast resistor (still readily available at a local parts store). This coil is being sold "as-is". It was working when removed from the hopped-up BUICK straight 8 it was on, but it's has been sitting on my shelves for the last 40 years.
The price is $95, plus the shipping. Thanks for looking.