These are at least 3 I know of....for 1937
The third one is "similar" to the one my dad has, the front portion is flatter, stubby and not rounded off also has a swing open cover with a lock underneith, I think he has another one that is the similar wing shaped but different than the one in the picture and the one I described above. I believe most are aftermarkets!!!The third one looks like a 38 pickup
Were they all ford accessories or aftermarket?