Early unidentified Apple Computer circuit board from 1985 marked with the code “MC1110-07,” 8.5˝ x 3.75˝, with labels to either side numbered “2575.” In fine condition. Although unconfirmed, this board appears to be a prototype for a controller board for the Macintosh Hard Disk 20, the first hard drive developed by Apple Computer specifically for use with the Macintosh 512K. Introduced on September 17, 1985, it was part of Apple's solution toward completing the Macintosh Office announced in January of that year.
From the collection of Dennis Grimm.
