Maicu, the above information is good. Your particular Ford would not have been manufactured in and for America, but but may have been for export, I don't have that information. Argentina may have assembled a Roadster version as Australia had. The American 1938 Ford DeLuxe Convertible Coupe had roll up windows, while your model would have been discontinued the previous year as a 1937 Ford DeLuxe Roadster. If you can post some pictures of your car, we can confirm all this for you.
The rumbleseat is opened with the large handle below that resembles an aircraft propeller. If your car has the original brakes, they are mechanical, actuated by cables, and are superior to Ford's hydraulic system of brakes that began the following year.