Got this for 60€ today :
A 12MHz 286 with ... an EGA monitor ! sweet ! And that monitor supports anything older than VGA (and even VGA I guess since a sticker on the back says that it supports "PS/2")
Inside of it there's a 40MB MFM HDD
as well as this EGA video card :
60€ if more than what I'm willing to pay usually, but since I've never seen an EGA monitor before and it wasn't too expensive, I think that was worth it.
The mobo seem to support up to 4MB of ram, but at the moment it only has 1MB. Upgrading the RAM will probably be a pain since I need to replace every single chip ^^
Another really good thing about that mobo : it has a DALLAS battery chip, so no battery leakage here. Some people here doesn't seem to like them much here, but prefer drilling into a chip and add a battery holder to it rather than trying (and failing everytime) at repairing a mobo that was damaged by battery leakage