Denny Graham,

I had a Mallory dual point setup in my '54 coupe when I was a kid...this is how I understand it. The dual points create a overlap that allows the coil more saturation time. I have thought about how it works several times in the last couple of years and can't picture it in my pea brain.

If you drew a little cartoon and understood how the points were wired to each other it might become evident. Any-hoo, it's all about coil saturation..I think!

Stuart