Nineteen feet tall. Twelve feet in diameter.
The F-1 is still the most powerful single-chamber liquid-fueled rocket engine ever put into service. Manufactured by Rocketdyne, five F-1 engines were used in the first stage of each Saturn V rocket, each generating 1.5 million pounds-force of thrust—more than all three Space Shuttle main engines combined. The present model comes from the 1964-5 New York World’s Fair, held in Flushing Meadows, Queens.
Bonhams is handling the auction of the model, which is being sold as is, where is, in Garden City, NY, and is expected to fetch $15-25K. [Thanks, Rachel!]