This is a pre-April board. This means that the Articia Northbridge has bugs which can cause reliability problems with IDE (this is a development board). Later Pegasos boards fixed the problems in the Articia with a custom chip known as "April", and the new Pegasos II uses a different Northbridge entirely, which doesn't have these bugs. Personally, I have only noticed this when copying large files from CD to hard drive - sometimes the files will be corrupted, but you should be aware of this when bidding.
The Pegasos is very rare - there were only 600 originally made, and probably only a couple of dozen are in the UK. Most of these were upgraded to April or April II.
im bidding on this myself but only to a hundred pound
the link is here
pegasos 600 g3 developer board