Dear all. I bought a chanel bag that belong to caviar modern chain tote bag, it has no identification card, just number inside of bag. This model now is not produced anymore as I know. That bag I bought is same this one. http://www.portero.com/shop-by-category/bags/tote/chanel-black-distressed-caviar-modern-chain-xl-tote.html# I have experience in authentic bags to know that is authentic chanel bag, but still considering about how to check and identify code of chanel bag if have no Idenfication card. Hope to get your instruction soonest. Thank you very much in advance.