A Saturn Rocket Switch Selector, measuring 12.5 x 5.25 x 8.5, bearing a Marshall Space Flight Center parts tag affixed to one side, reading: “Pt No. 50M67864, Mod No. II, Ser No. 201, Wt 19 LB 10 OZ, Mfd By I.B.M. Corp, Contr. No. NAS 8-14000.” The unit is wrapped in foil and has pairs of ports on opposite ends labeled “J1” through “J4.” Scattered dings to the housing and toning to the label’s adhesive, otherwise fine condition. Located in the Saturn IB and V Instrument Unit, the Switch Selector relays flight sequence commands from the onboard digital computer to the rest of the launch vehicle.
