This item was discussed by the physicist Richard Feynman in his book of stories: Surely You're Joking. He said he was in Greece and went to the museum where the computer was supposed to be and found that not only was it not on display but no one there seemed to be realizing the importance of this find.
There was an article on it in Scientific American a long time ago but I don't believe it showed any of the gammaradiographs. From the picture they did show of the corroded object it was hard to see how they deduced a a very complex structure including a differential gear.
...For more info and pictures check the link provided in message #5 by: evolved_rage