1965 Barracuda rear defogger

there is a guy in Celine Tennessee selling a Formula S with supposed factory defogger. I think he recently bought it, and is turning it around. There was a picture of the Defogger switch, located to the left of the factory tachometer..View attachment 1715044929
Ok, I don't have that switch.I am pretty sure my car never had a defogger. trying to find out other reasons for the short rear panel.
Thank you for the pic. I continue to learn.
Rjg