A rare prototype of the original Apple Macintosh featuring a 5.25-inch disk drive instead of the 3.5-inch drive the personal computer eventually shipped with is headed to auction again as part of Bonhams’ upcoming History of Science and Technology collection.

An Apple Macintosh prototype equipped with a 5 ¼-inch "Twiggy" drive from 1983 will soon go up for auction online.

A prototype of a vintage Apple Macintosh equipped with a “Twiggy” drive model from 1983 will soon go up for auction, and is expected to go for anywhere from $80,000 to $120,000 (or more) when it goes on the virtual auction block.

A rare Apple Macintosh prototype from 1983, featuring the "Twiggy disk" drive, is expected to sell for over $100,000 at auction (via

One of two Apple Macintosh prototypes extant and already the most valuable Apple Macintosh to have ever sold at auction, #M0001 is heading for auction at Bonhams’ History of Science & Technology Sale.

A prototype of a vintage Apple Macintosh from 1983 is up for grabs at auction, with the "Twiggy" drive model expected to exceed $100,000 when it goes under the hammer.