This is the bass that Kurt smashed at the end of the Smells Like Teen Spirit video. It's been on display at the Hard Rock in New York. However when I went to go see it I couldn't find it. I asked the staff at the Hard Rock and they said they didn't know anything about it. According to a member of livenirvana.com it was indeed on display as of December 2008.
Can someone get a better screen grab of the video? Thanks!