Kusanagi Sword

I understand that the Kusanagi sword (or possibly a relica) one of the three pieces of imperial regalia is housed at the Atsuta shrine. Is it ever dispalyed to the public? Are the caretakers or priests at the shrine allowed to see it? Does anyone know what it looks like? I saw a picture on the internet that was supposed to be the Kusanagi but I have my doubts. Anything that anyone can tell me about who has seen it or what it may look like would be helpful.

Thank you,

Mark A. Gerardi