 The models of the Thunderbird vehicles seen on the table in front of  Jeff in the opening scene of "Give or Take a Million" were  commercially available at the time of this episodes initial  broadcast (25 December, 1966). They are the "Thunderbirds" model  toys produced by J. Rosenthal (Toys) Ltd. Unfortunately, Rosenthals  Thunderbird 5 didnt look very much like the genuine article, so it  does not appear in this scene.