A segment of umbilical cable from Mercury-Redstone 4, measuring 3.25″ long and 2″ in diameter, which connected to the Liberty Bell 7 during launch procedures and provided all electrical power to the spacecraft up to the T-minus 30 second mark, at which time it was ejected. In fine condition. Only two spacecraft umbilical heads were salvaged during the entire Project Mercury program. Al Shepard's M4-3 plug, which was given to him as a post flight gift by the launch team and now resides in the Astronaut Hall of Fame Museum, and the M4-4 plug that Guenter Wendt kept for his own collection. Included is a 1993 unsigned letter said to be from Wendt and a plastic bag with what may be the Pad Leader’s handwriting on it; given the known history it is quite possible this cable originates from Wendt’s personal collection.
