I own an Atari 130XE, which was an 8-bit Atari computer that was sold from 1984-1989. It was a really good gaming computer and was probably the best home gaming device of the 1980s other than the NES.

The rarest console/dedicated console I own is the Odyssey 300. 

Nothing rare unless this counts. It's certainly a collectors item

Otherwise its older consoles like the NES and Saturn but they aren't rare at all.

A WiiU .

Nah seriously. I have a couple that could be considered 'uncommon', besides the old consoles I have that were actually successful:

- Philips G7000, named the Magnavox Odyssey2 in other parts of the world. A console somewhat popular in Europe during the time of the Atari 2600.
- A Dreamcast, which seems to be quite sought after these days.
- A Nintendo Color TV-Game 15. Got that just for fun, because I wanted a Nintendo console from every generation. It was only released in Japan, so got it through eBay. The guy sent it to me across the world in a package decorated with a couple dozen stamps . Now I only need a Virtual Boy and a Game & Watch.

I have no Limited Edition consoles except one.

- 3DS Ocarina of Time Special Edition, which I keep sealed, I use a standard aqua-blue one as my system.

I have a Timex Sinclair 1500, it's pretty similar to the ZX Spectrum. Infact I think the design was almost exactly the same and it was comparable to the lower end Spectrums or a higher end ZX 81.

It looks so beautiful.

i own this thing