I don't know why there wouldn't be an authenticity tag sewn into the bottom. I have a hard time believing it would have come detached somehow. With the exception of a couple of random seasons, BV put the tag in the pouch. Wait, no, that didn't come out right. I meant there were a few random seasons that BV put the tag in the pouch instead of the bag. Also, the Crystal Cabat like Mousse's has the tag in the pouch.
The numbering on the plaque was used for maybe the first year or two of Cabat production.
**Please anyone who knows otherwise correct me, because my Cabat mojo isn't super strong**
A large majority of fakes have used this numbering system, and they didn't pull it out of thin air. I'm sure everyone knows that the best producers of counterfeit bags purchase the authentic one, pull it apart, and copy every last detail.
I want to say there is one member of this forum who may have an original Cabat from around 2001 with that particular numbering system on the LE plate.
What does the zipper pull look like and what is the branding on the underside of the zipper?
I'm gonna go deep and see if I can find anything but I always think it's best to err on the side of caution and return if there are any doubts, and there do seem to be some. Another alternative is to try a service like Authenticate4U