Over on the Japanese Yahoo Auctions site, someone has listed an apparent pre-production version of the Super Famicom — the Japanese counterpart of the Super Nintendo (SNES). It’s similar to the console Nintendo eventually released in 1990 but with some stand-out differences, like a headphone jack and volume wheel on the side. Video game collector and historian Chris Kohler called it “god-tier Nintendo collector bait.”
Some other variations...