I purchased a S/C Auburn with a distributor that had been changed over to an electronic ignition. I wanted to restore it back to the old dual point system, but found that parts weren't available. Just by chance, a Packard dual point Autolite IGH 402 distributor came up for sale on Ebay and I bought it. It turns out that all the internals matched up perfectly with the Auburn parts I needed, including the contact sets. (not sure about the weights, but these weren't needed)
Just thought I'd pass this info along, in case anyone else is anal enough to care about this sort of thing. C.S: If you are in need of that small contact point, I now have an extra.