If you click on the bidding history it shows 4 bidders, one topped out at EUR 5, one at EUR 20, then the remaining two pushing it to final EUR 1200 (took a lot of bid increments to get there).
The winning bidder submitted their bid about an hour before the lot closed, so must have been a pre-bid or proxy bid. The underbidder looks like they started bidding when the lot went live, so probably a live bidder.
So either doofus pre/proxy mid meets doofus live bidder, or doofus pre-bid and shenanigans (it was the pre/proxy bidder that won).