The mythical SNES-CD, the aborted collaboration between Nintendo and Sony from the early ’90s, has been found in a box of junk.

No, that’s not not a mistake in the title. But if you know your video game history you’ll be aware that the PlayStation brand actually began life as a collaboration between Nintendo and Sony.

You can read up on the details here, but the basics are that Sony was going to provide a CD-ROM add-on for the SNES console, but when Nintendo belatedly realised that the deal would give too much control to Sony they backed out at the last minute.
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https://metro.co.uk/2015/07/03/fan-discovers-rare-nintendo-playstation-console-5278031/