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Early prototype of the Macintosh 128K computer, featuring a Macintosh analog board and a Macintosh Plus prototype board, with an Apple label affixed underneath the production front bezel bearing the model number, “M0001,” and serial number, “F4010G5M0001,” the latter of which indicates that this was the 549th Mac manufactured during the 1st week of 1984 in Fremont, California. The analog board bears no test markings and is marked in felt tip, “1013,” and the 1985 prototype “Mac Plus” logic board features a pre-production 68000 CPU, white RAM sockets, a handwritten number, “119,” to the bottom right, and the code “MC1121-1,” instead of the standard model number, ‘820-0174-A.’ The interior of the case housing bears a green Apple parts stamp: “CFTC 1, RJ, 805-0564-A.” The case back is no longer present. In very good to fine, untested, condition.
Introduced in 1986, the Macintosh Plus was the third computer in the iconic Macintosh line. An improvement over the Macintosh 512K, it shipped with 1MB of RAM standard, and was expandable up to 4MB. It also included an external SCSI peripheral bus and several smaller improvements over its predecessors. Although the Macintosh Plus was soon overshadowed by the release of the Macintosh SE and the Macintosh II in 1987, it remained in production as a less expensive alternative until 1990—making it the longest-produced Macintosh ever.
From the collection of Dennis Grimm.
