With the current bid being a whopping $310,000 USD. As per the description this is a prototype of the Nintendo PlayStation Super NES CD-ROM that was to be developed by Sony before the relationship fell apart and Sony decided to release the PlayStation on its own. The rest, as they say, is history. But, one of the most sought after and talked about bits of videogame history by far.

Hence the price. And it's in full working order too - except for the fact that there aren't any Nintendo PlayStation games.

It is said to be the last remaining prototype of the alleged 200 that were forged from the failed joint-venture between Sony and Nintendo, two of the biggest competitors in the home console video game market. Reportedly, the other prototypes have since been destroyed. We at Heritage can attest the prototype is working, as we've played a couple of rounds of Mortal Kombat on it using a Super Famicom cartridge.

The prototype does share some exterior similarities with both the Super Nintendo and the Sony PlayStation, but it has its own, unique characteristics as well. It has not only a slot for Super Famicom and Super Nintendo games, but a CD-ROM drive that was meant to play disc-based media and presumably video games as well. Though the CD-ROM drive was not currently working when it was found in 2009, it has since been repaired by Benjamin Heckendorn, a YouTube personality known for his console repair videos. It now has the ability to play music CDs like the commercially produced PlayStation, but there is no proprietary software that's known to have been made during the prototype's development.

The Nintendo PlayStation, circa sometime in 1992, is currently on auction via Heritage Auctions - so be sure to check it out if you happen to have a small fortune sitting close by. According to the listing and historians most of the prototypes for this joint-venture have been destroyed - making this one of the only known units in existence.