5. The Piano from Casablanca – $2.9 million
When Humphrey Bogart is in a moment of self reflection during the 1943 movie Casablanca, he looks over to a guy named Sam at a piano and utters the famous line “Play it again, Sam.” Maybe Sam wouldn’t have touched the piano if he knew it would be the most valuable musical instrument memorabilia in the history of Hollywood. Rotten Tomatoes gives the move 97 percent, so if you haven’t seen it, you’re almost guaranteed to love it. The plot is fairly simple: Bogart, playing Rick Blaine owns a nightclub in Casablanca (that’s in Morocco) and he bumps into an old girlfriend, Ilsa, portrayed by Ingrid Bergman.