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 James D.A. "Ox" van Hoften, who was a mission specialist on STS 41-C and STS 51-I.
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.