One (1) logic module in a black plastic carrier, with four connectors marked "8526485 A 9 220 76." The substrate is covered on both sides by a gridded-field of square-shaped solder marks. The component side of the module has various components attached.
Date
1965 ca.
Manufacturer
International Business Machines Corporation (IBM)
Identifying Numbers
Other number
228
Incised on two of the four connectors, solder-side
Other number
8526485 A 9 220 76
Printed in white on all four connectors, component-side