Hello
in my aviation collection, I have an old joystick. He is apparently from a Lockheed P / F-80 Shooting Star ??. There is an C 4 and H D A M are engraved on the original stick. What does that mean ?. The manufacturer is apparently after Logo Guardian Electronic. The striking are rounded buttons and big green trim buttom. I think, that the control Grip is an first old from the 1950s. Who has information for me? Thank you