A 1976 Apple 1 Is Expected to Sell for Up to $500,000 at Auction - Businessweek

Not a bad ROI for a $666.66 investment

"The duo presented what would become the Apple 1 at the Homebrew Computer Club and won their first order from Paul Terrell, owner of the Byte Shop, of 50 fully assembled units for $500 apiece. One of those motherboards is going to auction on Wednesday as part of Bonhams’s “History of Science” auction, and it is expected to fetch from $300,000 to $400,000."

A 1976 Apple 1 Is Expected to Sell for Up to $500,000 at Auction - Businessweek