I have that very same system shown in the very beginning of this video.. It needs to be restored new needle and capacitors for the receiver. I saved it from the junk pile my dad was cleaning out the cellar and i saw it outside and grabbed it. Can't beat the sound those machines had.
You can get this commercial on a DVD called "The 70s Dimension"- it's a bunch of 16mm TV commercials rescued from a TV station's dumpster. I would've fired the guy who positioned the speakers as shown at 0:16
There was a portable Magnavox TV ad on RU-vid years ago, with a big product picture lineup at the end. The RU-vid police erased it. I wish the Magnavox ads would show up with the frequency of the RCA ads.