Back in the 90's, I think, several us in the Cincinnati area got involved with"Golden Age Racing." It originated with some guys in New England. 36" span, .40 engines with 11" diameter props. That looks like one of the models built by one of the guys here. Most of them have passed away. Do some research the racing planes from the 30's and you will probably find that plane. I still have two Mew Gulls that I built and a Napier Heston racer built by one of the deceased guys. I suspect that your model was built by the guy who built the Napier Heston.
Chuck