Signed by Robert Heinlein on the title page. A very rare signed copy of the author’s masterpiece, which began as a cult favorite, grew to a bestseller and now is considered a classic work of literature. Winner of the 1962 Hugo Award (and likely would have won the Nebula, but published before the award was introduced). First printing with code "C22" on page 408 and green colored page edge. Jacket with code "0761" on the front flap. Currey, p.234.