Steve Jobs memo and Apple I motherboard sold for $400,000 at auction Two pieces of early Apple memorabilia have sold for twice their estimated price. Sotheby's auctioned off one of the last remaining Apple I motherboards, which were sold in 1973 for $666.66, for $374,500; it was originally estimated to net up to $180,000. The motherboard came with an original Apple I manual, a programming guide, and a cassette interface sold as a $75 accessory.
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