This parachute is one of the three main parachutes deployed to safely "land" the Apollo 17 Command Module after its successful December 1972 lunar mission. The parachute system selected for the Apollo command module consisted of two ribbon drogue parachutes, which accomplished initial deceleration and stabilization. After disconnect the two drogue parachutes were followed by three pilot parachutes, which in turn extracted three ringsail main parachutes (only two of which would provide the rate of descent necessary for a safe water landing).
NASA transferred this parachute to the Museum and it was displayed at the Alabama Space and Rocket Center beginning in March 1973.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.