Doesn't matter to me. If it's authentic, it's authentic. The card doesn't make a difference. Always good to have though-- to me, it's like having a CL shoe box with the shoes.
I never cared about holding on to my authenticity cards until I joined TPF. I don't plan on selling any of my bags but if I did I would be one of those sellers without the card. However I'm not sure if I'd buy a bag without the card.
