American Optical Company Aviation goggles

[jsmythe]

I recently found an old pair of my grandfather's aviation goggles. I know he was not in the Army in World War 2 and serve under General Patton in Europe. The goggles are listed as being American Optical Company Aviation Goggles A36, model-transport, Lens-clear. i have the original cardboard box, metal case, instruction manual, along with everything you see in the pictures. I am just trying to find out more about these and have come up with nothing on internet searches. Can you tell me anything about them? Are they worth anything?