This is a model of unknown scale of the Harpoon, a U.S. Navy submarine-launched and ship-launched anti-ship missile. The first version, the RGM-84A, had a range in excess of 65 miles and carried a 488 lb conventional warhead. First deployed with the U.S. Navy in 1977, advanced versions are still in service today. The manufacturer is unknown.
John and Cynthia Heyde donated the model to the Museum in the late 1980s.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.