$3,550

After the 1981 assassination attempt on U.S. President Ronald Reagan, he had blood taken at the hospital. That vial went missing, and turned up online and went to auction in 2012. It wasn’t full of his blood, thankfully, just the residue, but still.

It went up for auction again shortly after, and bidding reached $30K, before it was shut down and the owners donated it to the Ronald Raegan Presidential Foundation instead.