Board Thread:Naruto Discussions/@comment-3568954-20140809070807/@comment-23887466-20140809172258

In the story so far, there are three Kusanagi Swords. Orochimaru has one, Sasuke has one and Itachi has one (Itachi's sword is also known as Totsuka Sword and Sakegari Sword). Itachi's sword is the only one made from Chakra, Orochimaru's sword can turn into a snake, therefore he can summon it and Sasuke's sword gone forever.