This desk stand commemorates Project Mercury, the first U.S. manned spaceflight program. There were a total of six launches of Mercury manned spacecraft. The first in May 1961 carried Alan Shepard in his historic sub-orbital flight. After one more sub-orbital mission, John Glenn in February 1962 became the first American to orbit the Earth. There were three additional orbital missions in 1962 and 1963.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.