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 (IBM)
Identifying Numbers
Other number
246
Incised on one of the four connectors, solder-side
Other number
4161320 A 6 560 76
Printed in white on all four connectors, component-side