I just got my first Mui Mui bag yesterday (from Bergdorf's). It's the Napa Spring Frame bag and it is TDF! Wore her today for the first time and got a compliment within the first half hour. But, as I'm new to Mui Mui, I have a question. The dust cover is grey, but without "Mui Mui" written on it. All my other bags (i.e, LV and Marc Jacobs) have the the designer's name printed on their covers. Is this typical of Mui Mui? It's not a problem with me at all, but I am curious.