The number is stamped on the component side near the logo.
The number is etched on the solder and component side. The number is also drilled on the component and soder side of the board.
The number is etched on the component side of the board.
overall: 1/2 in x 12 in x 17 1/2 in
The object is a populated circuit board. Etched into one side is "FAIRCHILD SEMICONDUCTOR" and "DIGITAL SYSTEMS RESEARCH." The integrated circuits on the board are dated either 1969 or 1970. There are numerous wires on both the component and solder side of the board and there are additional components on the component side.