These generators are quite common. I have a left over one, from when I put a 6 Volt alternator on Minerva. It's in PERFECT condition.
Bill Hoarder
Just a bit of trivia. Although the generator will work fine on a Model A it is from a '33-'34 four cylinder Ford. You can tell this from the chamfer on the back of the case and the rear plate. I assume the front plate is a casting and not a stamping? Inside of the front plate you will probably find a "46" part number.
Charlie Stephens