Standard Modular System (SMS) card of unknown function, containing discrete transistors and resistors. The circuit board is single sided and has 16 printed finger pins along one edge. There is a partial ground plane on the component side but not under any of the components. There is only one sample of this particular model number.
Date
Circa 1959
Manufacturer
International Business Machines (IBM)
Identifying Numbers
Model number
371311
Stamped along the edge of the component side of the board
Other number
EC 105798
Stamped along the edge of the component side of the board
Other number
IBP03F
Stamped along the edge of the component side of the board
