Thanks to all who have helped me!
I received a PM from a fellow forum member, Extiger, with information that directed me to the location where the outlets were originally installed. A previous owner had removed them, I assume when they re-located the TV installed onto the wall mount TV bracket. (Extiger said he uses a TV table near the original outlets) The original antenna and 12v
outlet location is between the road side windows about 4' above the floor.
I think all I will have to do to get things back to original is to uncover the boxes that are mounted in the exterior wall, install new devices, and install new cover plates.
I appreciate all the responses, thanks!!!