The console, never released to the public, only exists in early prototype form.
Only a couple of hundred were known to be manufactured, the result of early plans for Nintendo and Sony to team-up on a version of the Super Nintendo Entertainment system with a CD-ROM drive.
But the plans fell through - famously, Nintendo opted to partner with Philips instead. And while that deal faltered, Sony continued with the development of its CD-compatible PlayStation as a separate device.
The photographs below show the console prototype with its CD-ROM drive, plus ports for both SNES cartridges and controllers.
Each pad is labelled with the Sony PlayStation branding on the front, but with a Nintendo Super Famicom Controller logo on the back.
The images appeared on Reddit yesterday (thanks, Nintendo Life). The user claimed that the console was discovered in a box of items received from a friend of his father who used to work at Nintendo around the time that the Nintendo-Sony deal was being discussed.
Here it is, in all its yellowing glory: