Bob Dylan - The Freewheelin' Bob Dylan
Bob Dylan dropped his masterpiece in 1963 with Columbia Records. However - Dylan spent so much time expertly ordering all of the tracks in the most pleasing listening order, and then when it was sent to pressing, someone messed it up and put the wrong tracks on it. However, the mistake was caught early, and only a few copies were made. If you have one with the serial number ending in "-1A," you have the mistake copy. It sells for $35,000.
Elton John, I've Been Loving You
Elton John released I've Been Loving You in 1968 under Phillips Records, and the original pressings sell for $5,000. His debut single is credited to Bernie Taupin, though, because John didn't want to admit that he'd written it.