No, it's a PS/2 50Z, which comes with a 10MHz 286. It was my first computer, second hand from my dad. When I got it, I saved up and bought the 386SX/Now!, a 25Mhz 386SX that fits into a 286 slot.
> Selling it in 1996 for a few bucks was probably the worst mistake I did in my computer life.
Why do you say that? They are great machines (mine has lasted forever) but finding parts was hard even when they were new due to the microchannel architecture.
So the interesting thing about that is there is now a dedicated team of enthusiasts porting and cloning cards on MCA[1]. Still not cheap... but at least you can get a sound card now.