A four-page memo written by Steve Jobs and a functioning Apple I motherboard will be auctioned by Sothebys.com. The auction is set to take place on June 15th in New York City, and Sotheby’s estimates the Apple I motherboard, created by Steve Wozniak, could sell for up to $180,000.

Sotheby’s claims that this Apple I motherboard is one of only six known to exist in working condition, but its hefty price tag also covers the original operation manual, a BASIC programming guide, and the cassette tape interface. A similar but non-functional Apple I motherboard was auctioned by Christies.com in 2010, and in that instance the motherboard set sold for a grand total of £133,250, or $212,267. The board originally sold for $666.66 in 1976, with…

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