Show a picture if you can. Does it have a Mallory ID plate on it??
There are lots of variants of dual point Mallorys, but I have never heard of a dual coil one.
Lots of big/expensive '30's cars used dual coil, and in the fifties there were DC hotrod distributors based on OEM ones (Including the Zephyr) and also pure aftermarket ones. Iy yours is a Mallory, it is something unusual.
Mallorys back into the thirties, at least, all carried an engraved/etched side plate with Mallory name and model info.