I bought a distributor with that plate at a swap meet in Munroe Wa last spring. Seller said it was a mallory dual point. Ford tag wasn't ledgible and I'd never seen a mallory dual point, just heard of them here so I bought it. I spose I got taken, but it had a nice new cap and vac advance unit and was in good condition overall. Probably never use it because part of going 8ba was to rid myself of the dual point business on the 59 ab. My 276 8ba runs beautifully with just one set of points and even a shade tree hick can adjust them alongside the road if needed.