Max Steiner, The Caine Mutiny
This is basically half dialogue recording and half soundtrack. It was scrapped when author Herman Wouk threatened that he would not allow the studio to use his work again if they released it. He was furious when he saw that they were stealing his intellectual property. The B-side was a verbatim recording of a scene from his novel. Columbia said they would destroy all copies they had of this album, but employees stole a couple of them first. They say there is a dozen out there! In 2007, one was sold for $6,700.
Sex Pistols, God Save the Queen (1977)
They pressed 25,000 copies of the single. It is believed that only 10 of these survived when A&M had them destroyed. The Sex Pistols apparently terrorized the label so much that they got dropped only six days after they signed the contract in front of Buckingham Palace. Johnny Rotten reportedly threatened execs and cursed them out. Meanwhile, Sid Vicious ruined the toilet at A&M HQ. The label decided they were too much to handle, so they dropped the punk legends and destroyed all copies of their single. Some people knew well enough to filch several copies before they were ruined. Copies of the album that come with the A&M label on the center have been sold for more than $8,600!