One (1) logic module with four black plastic female connectors along the left edge. Both sides of the substrate are covered by a gridded field of square-shaped solder marks, and the front with various components.
Date
1965 ca.
Manufacturer
International Business Machines Corporation (IBM)
Identifying Numbers
Other number
279
Incised on one of the four connectors, solder-side
Other number
4160882 A 0 447 UP
Printed in white on two of the connectors, component-side