Among the items issued to astronauts are velcro-backed leather name tags that can be attached to flight suits. This name tag is a spare for Shuttle astronaut John E. Blaha, who was the pilot for STS-29 and STS-33 and commander of STS-43 and STS-58; he also spent almost four months aboard Mir, flying to and from the Russian space station on STS-79 and STS-81.
NASA transferred a number of spare astronaut name tags to the Museum over the years, including this one in 2001.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.