The object is an empty circuit board with an elaborate circuit and silk-screened component numbers. Two ICs and a few resistors have been hand-soldered in.
||Printed on outer end component side
||Printed on left edge component side
||Stamped in black on component side
overall: 1/2 in x 4 1/4 in x 4 3/4 in
Courtesy of Carnegie Mellon University