Seventy years ago, this day’s issue of Life Magazine, March 4, 1946, carried this ad for the RCA model 56X5. The “12,000 Miler” covered standard broadcast and short wave with six tubes, including the rectifier.
I’ve always considered this set to be quite handsome, and it’s also a good performer on both AM and shortwave. A nice example can be found at the Radio Attic Archives. And you can see the set in action pulling in some Chicago stations at YouTube.