http://www.theguardian.com/film/2007/oct/16/news1

“The only Oscar awarded to Citizen Kane, widely considered one of the best movies of all time, is to be auctioned in a sale that could fetch more than a million dollars.

Sotheby’s has announced it will auction off the Academy award Orson Welles and Herman J Mankiewicz won for best original screenplay in 1942 – the only gong the film won, despite nine nominations…”