Just got the board in today and it's exactly as the listing describes. It's new in the box and still sealed! The box is in excellent shape. So if you are looking for a new slot 1 motherboard able to take all the pentium offerings or a collector, this item fits the bill for both.

Now the dilemma:

Should I open my nice, new, sealed box knowing that if I do, I reduce the number of nice, new, sealed box in the world by one and also knowing that there will never be anymore made and that one day there will be a time that there will never be a nice, new, sealed box in the entire world and I helped contribute to that scenario...........

Or do I open it up, use it and enjoy it knowing it's never been used or abused.

I always cringe when I see youtube videos of people opening NOS items and treating them like they can go out to the store and buy as many as they want.

It seems like that (or a similar) Ebay listing somehow "restocks" and reappears with more boards from time to time. No idea where they get them from. I purchased one a few months ago for my Katmai PIII box with good results. (Yes, I opened the box......)

One correction (?), though: the only AA revision of the boards that get shipped is probably 754558-304 (the latest revision), not -303. Mine is a -304, at least.

How many of these things did Intel make? Still better having 100's of decent motherboards on the market then 100's of rubbish no one wants.
Way I see it is you have 2 options. Helped by the fact that really your not getting any benefit from the actual "upgrade"
Keep it boxed, value will only go up, and you don't really have a use for it yet.
But if your never going to sell it on, Open it, use it, enjoy it. battery and caps are slowly dying with age. You can find out now if its DOA or not. Even if its only for a moment then put back in its box as a backup