United States Air Force countdown clock measuring 19 x 18.5 x 7.25. This digital countdown clock is a stack of two separate readouts, the first of which is labeled "Countdown 1" with display panels for mission, minutes, and seconds; and the second readout, labeled "Countdown 2" with displays for hours, minutes, and seconds. Two labels are affixed to the front which read: "Property of USAF PAN/AM/ASD 08(606)-68C-0040,” with several handwritten black felt tip notations written on the side. There are six pin-type connectors on the rear that would connect to communication cables. In fine overall condition, with expected wear, and a small crack to top display. This clock would have been associated with various launch operations, primarily to place military payloads into space. RR Auction COA.