A lot of auctions are like that. The party making the listing has no clue about the items, and exposes themself to liability if they guess wrong, so it's better to just put no information at all.

Unlike eBay, with traditional auctions, all the responsibility for "inspection" lies on the bidder -- you're expected to visit the item during the listed inspection times, if there are any, and make your own judgment of its worth. If there's no inspection period, then you're guessing blind with everyone else.

In this case, click through to the GSA Auctions listing, and scroll down to see the "property custodian", give them a call during the hours listed above on the page, and haul your butt out there to inspect the item.