Do ALL authentic Prada bags have a white tag inside with a number?

I bought this bag at an estate sale. The home was probably worth $750,000. I also purchased belgium cookware and lucite bags. I noticed that there isn't a white tag inside the bag with a control number on it. Everything else matches up. It does have Prada stitched inside the lining. Is this a fake?|||normally the have a certificate of autenticity and a number