Givenchy Cardholder

Hi, I just purchased the beautiful YSL wallet you had listed. As it's sold as authentic I am assuming it is but wanted to double check before I make payment. I get everything I buy 2nd hand checked by a friend who works in luxury authentication so I can resell if I want to. Will do that when I receive prior to confirming payment so thought I should triple check first to save us all time. Thanks so much