After much consideration, and many hours of inspecting the images, I have arrived at the opinion that they are real.
In my selfless pursuit of all details relating to the making of "The Eiger Sanction" I will investigate this matter more deeply, if necessary placing boots on the ground, and hands on the, uh, the subject matter under discussion.
If one is prepared to identify the tires on the Bronco then it seems sensible to pursue the same depth of detail with every aspect of the movie, you will agree ?