Now that robots have progressed from science fiction to reality, it isn't all that surprising that Robby the Robot's price has surpassed all but one of the most iconic movie props in history.

The complete Robby suit, control panel, his jeep, numerous spares, alternate original "claw" hands, and the original wooden stage shipping crates, were sold yesterday (November 21, 2017 ) by Bonhams in New York for US$5,375,000 including buyers premium.

The only purpose-built movie prop to have ever sold for more is Marilyn Monroe's "subway dress" from The Seven Year Itch (1955) which was sold by Profiles in History for $5,520,000 (inc. buyers premium) in 2011.