The machine, sold by Auction Team Breker in Cologne, is one of only 200 that were built and is thought to be one of the last 50 remaining. The auctioneers claim that this particular machine is one of only six Apple I computers that still work.
The homebuilt Apple I computer was created by Steve Wozniak and Steve Jobs and was expected to sell for between $260,000 and $400,000. The lot includes all the system components, plus the original manual and a letter to the original owner signed by Jobs.
The "Middle Eastern" buyer wants to remain anonymous, according to a spokesman from Auction Team Breker.
Last November, the Cologne-based auctioneer made international news when it sold an original working 1976 Apple I computer for a then-record price of $640,000. Last July, Sotheby's auctioned off an original Apple I motherboard for $374,500.
Another rare Apple computer, the Apple Lisa, was sold at the Breker auction for €41,808 ($54,351). The Apple Lisa was the first mouse-controlled computer when it was built in 1983. It also exceeded the auctioneers' estimations of selling for between $20,000 and $40,000.