I just received an Edith Bowler and and Edith NS Satchel from Neimans and Bergdorfs, both of which I was lucky enough to get at a great price. After examining the bags closely, neither of them have a heat stamp or any type of serial number. Is that normal? I guess I assumed that bags in this price point would have them. They both have "Chloe" and "Made in Italy" embedded in the leather but try as I might, I can't find any other type of 'authenticative' info. Thanks for your help!