Thank you, that's very useful to know. I will post a picture of the stamp once I receive it.
I was actually referring to this other purse when I was thinking of duplicate serial numbers, but now that I enlarged the picture I can see that it's actually J0D instead of 000. So maybe there's a possibility of it being an original. Good thing this was an inexpensive purchase, if it does turn out to be fake.
If you don't mind me asking another question, do you know if 000-9812 would be an authentic serial number format for this style of purse if it is indeed as old as the seller says it is? It's hard for me to find good information on the ridgefield style for whatever reason.
000-9812 would NEVER have been a valid number for a Ridgefield, for a number of reasons. Most important is that serial numbers that are ALL numbers will never include the style code or number.
Please read the first two Salearea guides about Coach creeds and serial numbers and save the links for reference, they're posted here:
http://search.reviews.ebay.com/members/salearea_W0QQcpnameZmembersQQprZsaleareaQQuqtZg