Among the items issued to astronauts are velcro-backed leather name tags that can be attached to flight suits and jackets. This name tag is a spare for astronaut Mark N. Brown. He flew as a mission specialist aboard the Space Shuttle in 1989 (STS-28) and 1991 (STS-48). His first mission was a Department of Defense flight and the second deployed the Upper Atmosphere Research Satellite.
NASA has transferred a number of spare astronaut name tags to the Museum over the years, including this one in 2000.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.