While not clear in the film, these are orbiting weapons platforms from German, China, France and the US. The latter is the first shown right after Moon Watcher tosses up the bone, the very first weapon, into the starry sky and at 4,000,000 years, cinema's biggest jump-cut.
Interestingly enough, those are not physical models but painted illustrations in the movie. If you love 2001, and want to have a complete set of models of the spacecraft, you will definitely want this set You can work on these while waiting for someone to produce the Hilton. I hate to sell these but I haven't touched them for 15 years, and by golly, someone should put them to use! The item "2001-A Space Odyssey Resin Model set from AJA Models" is in sale since Monday, August 27, 2018. This item is in the category "Toys & Hobbies\Models & Kits\Science Fiction\Other Sci-Fi Models & Kits".
The seller is "proxima1" and is located in San Jose, California. This item can be shipped to United States.