An 1872 skull ballot box from Yale University's mysterious Skull and Bones society will be sold as part of Christie's New York's Important American Furniture, Folk Art, Silver & Chinese Export sale on January 22. Skull and Bones was founded in 1832 and has been the subject of many works of history and fiction. The lot includes a black book with names and photographs of earlier members and is estimated at $10,000 to $20,000.