Because these are such amazing toys, I'll post a few photos that show the variations a bit more.
Here's the No. 1392 civilian Cierva C.30 Autogiro. My research shows it was released in 1935. The finish was always blue, and the toy was designed to fly down a wire strung between two points. There is a hard-to-find version with metal wheels on the landing gear.
This toy is a very precise copy an aircraft which flew in 1933.
Here's the No. 1431 Army Co-Operation Autogiro. I believe it was released from 1936-41 and featured a glossy green finish with British roundels. This toy was never designed to fly and was released in a smaller, more compact box.