This stunt tricorder was most likely used in the filming of Star Trek: Insurrection though Star Trek: First Contact is possible. It is made from foam rubber. The decals on the face of the tric were made and applied by the film production and not by the original prop house. This is a one-piece item and does not remove from the holsert.
Though the Profiles In History COA states that it is a 'First Contact' tricorder the graphics on the display, the original COA from Prop Store of London says it was used in the production of Insurrection.
