The only known "Nintendo PlayStation" console is being offered up for auction, and it is possible the intriguing device could end up fetching in the region of US$1 million or even more. The prototype was built during a joint venture between Nintendo and Sony in the late 1980s and early 1990s. However, the partnership ended when Nintendo made a deal with Philips.
https://www.notebookcheck.net/With-a-bit-of-luck-and-around-US-1-million-you-could-own-a-Nintendo-PlayStation.447902.0.html