In Seinfeld S8:E8 (The Chicken Roaster)
George leaves an expensive fur hat at his date in order to get another date when he comes back to pick it up.
However I can't figure out what happened with this item in the end. An internet search gave me this reddit thread which contains some speculation, but not much else.
Was the answer to this question ever made clear, either in the show or by the writers? It's really bugging me!