Mobile software developer and former Apple employee Ken Landau was engaged in a bit of spring cleaning when he uncovered a rare find: a still-functional, Apple-sanctioned portable version of the Mac SE created and built by electronics pioneer Chuck Colby in 1987, two years before Apple would begin its own journey into mobile computing with the Macintosh Portable. The Colby Walkmac (as it was known) was the first battery-operated Macintosh, as well as the first portable Mac with an LCD display. At the time, the 13-pound Walkmac sold for around $6,000.
