Originally Posted By: Beater of the Pack
This is on eBay. I've never seen one. Is it a conversion?
LINK


As far as I know, Delco never shipped a dual point dizzy for a stovebolt. The Mallory coil is certainly a 'tell' - but not of the origin of the conversion plate. Mallory sold a competitive dizzy that used a point set of their own manufacture.

These after-market plates use stock point sets - two of which leaves no room under the cap for a condenser:


So an outboard Mallory condenser is an option.
My research leads me to believe that the 'first' aftermarket dual point conversion plate was offered by Harman Collins depicted here using a more conventional condenser mounted outside of the cap.

What I haven't been able to figure out is the odd point set configuration that was depicted in this ad from Speed Age circa '50. The point set on the top right appears stock; on the lower left a mirror image . . . sourced from where?

regards,
stock49