This was the auction:
http://www.ebay.com/itm/380361240214#ht_5378wt_1346
The seller seems to sell a lot of these bags and all positive feedback. It's crushing to know I got a fake bag

What makes my bag a "fake"? :cry:[/QUOTE
hard to buy from ebay.. a lot of fake longchamp. i inquired one time and ask for the code. the seller gave it to me but told her, there was no such thing. she never replied to me again after i told her, she's selling fake. better return the bag and ask for a refund if she declared it was authentic. but do a thorough research on how to spot fake.