I replaced the white strap with a silver chain as the strap didn’t seem to feel right but I think i still have original strap and I have the box and cards. I don’t know if it’s authentic but for $100 I was still happy to have a Prada purse I could afford. but i have an entire cabinet of purses and I haven’t been using this one because I don’t want to ruin it. i’ve used it once.