She just replied my mail and here is her words:
hi - sorry - only just checked my email now - the zip just says chanel on one side and cc on the other. My son can bring it to you tomorrow if you like. What time is convenient for you? The hologram matter was only brought to my attention by a previous buyer and seemed rather odd to me too. I own a great deal of Chanel bags - another I am bored of I think I shall sell as well (I have attached a few pictures if you are interested), and the problem has never arisen in the past. I was told, however, that my details can be traced with the serial code, although this information may be untrue. Let me know about the time, ciao.
Anyway, I told her I don't wanna deal with her anymore.