Factory seal on lenses?

[japanviking]

I received my new 300 2.8L is today and I was surprised to see that the box was "sealed".
The brown outer box was closed with a kind of tape that said sealed.
I haven't noticed anything like this before on my other lensboxes.

Now I am just waiting for the rain to stop so I can try my new baby out :D

http://i9.photobucket.com/albums/a61/japanviking/box.jpg

http://i9.photobucket.com/albums/a61/japanviking/closeup.jpg

[Crashoran]

I think all lenses should somehow be sealed, because you never know if you are getting a fresh unused copy, or a copy that was sent back and they stuck back in the case then box.