The Standard Modular System (SMS) card of unknown function, contains 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. There is only one sample of this particular model number.
Date
Circa 1959
Manufacturer
International Business Machines (IBM)
Identifying Numbers
Model number
371319
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
YBN14F
Stamped along the edge of the component side of the board
