"It's not one-of-a-kind, but it's pretty darn close. Sotheby's this week auctioned off a rare, working Apple 1 computer for $374,500 to an unnamed bidder. The price was more than double the expected price listed on the Sotheby's web site. Sotheby's notes about the Apple 1 say it is one of six thought-to-be-operational boxes and one of about 50 known to exist."