Hello bobsmith The other chap was correct. You have an aftermarket unit. If you are looking for the correct unit for your car , I have one for sale. Check out my parts listings for sale , on old ride.. I will even sell you a complete car. Check out my listing in vehicles for sale " 1963 Chevrolet Impala Supersport 409" Have a good day realfine.

the radio you have is aftermarket chevy had 3 radio options in 63 a manual am ,a pushbutton am and a pushbutton am-fm.