I wonder if anybody can authenticate this bag for me. It is a White Blanc Twiggy with white lining, extremely soft leather. Number on the underside of the leather label reads 128523 3444 and states Balenciaga on the front of this label. This bag has all the appearance of being what it claims, but I am not sure. Can anyone help further. No photos at present, but is there any specific thing I should look for.