Board has a short ribbon cable attached to its outer edge connector. Some numbers from the ribbon cable connectors. One paper label on one IC. Some hand-soldered engineering change wires on wiring side.
Date
1979 ca.
Manufacturer
Xerox PARC (Palo Alto Research Center)
Identifying Numbers
Other number
08/79
Silk screened on component side
Other number
217135B
Labeled as "PWB NO." This number is silk screened on component side