This is an old Hercules I got last summer. It has 28 inch wheels and is a 1 speed with coaster brakes. The Brake arm on the Perry hub says 09 40. This makes me think It is a 1940. The problem is this bike has a Camel back type frame. I have been on the internet for hours trying to find another frame like this and have not found one. The only thing that is mentioned is that this frame may have been made for the North American market to compete with the Balloon tired bikes of this era. Can anyone shed more light on this old timer.