Digital Equipment Corporation (DEC)
overall: 3 3/4 in x 5 1/4 in x 5 1/4 in
Object is a piece of a wide flat ribbon cable. Cable is marked "First UNIBUS (tm) cable. Mfrd by Burndy, Tape Cable Division, Type 1680. 60 conductor. Object is approximately 6 feet of UNIBUS cable.
Courtesy Gordon Bell