User blog comment:D. Cello/Assassin's Creed: Revelations (PC) - Official Assassin's Creed Wiki Review/@comment-187.105.170.237-20111221184831/@comment-4822166-20120214223902

Altair knew there was an apple in Cyprus because at the end of the original AC it shows multiple piece of Eden location's this was the whole reason absturgo kidnapped Desmond so they could use him to get to this memory to see the map itself locating the pieces of Eden in the process. It's most probably the apple that was destroyed in the DIA accident was the one that was located in Cyprus but my problem is if Altair had his hidden with him in the library and Ezio sealed his in the coliseum then who's was the one that got destroyed I think there are hundreds that was ether wiped out during the end of the first civilization and the rest were hidden in the grand temples that will be a major plot point in AC3 but this last part is a pure intellectual guess so.