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I have not seen this one before and it is interesting that we have a Lego Atomic Power Plant! That is pretty fun and exciting. I am not sure if this one is 200 or 500 copies, but I would lean more toward 200 or fewer of this set. I have not even seen one of these before.
Thanks for looking
I will add this to the list of all of the others. You can see them here You may need to wait for a sec while the list is created.Just keep scrolling. I think I have found about 50 of these.