A Banksy painting sold for £1 million. Then, after the auction ended it automatically shredded itself.
https://www.telegraph.co.uk/news/2018/10/06/banksy-shreds-girl-balloon-print-sells-1m/
https://www.telegraph.co.uk/news/2018/10/06/banksy-shreds-girl-balloon-print-sells-1m/