The previous Apple I sold by Christie's, in November 2010, fetched £133,250/$212,267. It was exceptional in having a signed letter from Steve Jobs and its original box and instruction manuals and was acquired by Marco Boglione, a private Italian collector. Steve Wozniak attended the auction in person.
Unit 22 has come from the estate of Joe Copson, a former Apple employee and is expected to fetch between £50,000 and £80,000."
Link to Original Source