I have a NOS brush plate that is the same as the standard T brush plate except it has three slots and holes where it mounts to the cover instead of four. What is it?
I do not think it for a Model T Ford.
Here are photos of the only two two (early & Later) brushplates I have seen used in Model T generators.
Ron the Coilman
Sorry for the mistake. The one shown above is the early unit.
Here is the later unit.