I just got a little something from Hermes, among other things the 2007 cadena and a bottle of ambre narguilé. What puzzles me is that the perfume came in a dustbag, but the cadena did not!? I'm really afraid to get scratches and peels on the cadena and I don't know where to keep it when it's "resting". I appreciate a dustbag for the perfume, but honestly I'd rather have one for the cadena. Is it normal not to get a dustbag with it? Any suggestions on how to keep it?