What were the differences you saw between yours and the one in store?
Many things dear..
First is the dust bag. Customer assistant said that the letters "3.1" which following with "Phillip lim" on the dust bag never come in white letters and the handle of the dust bag always come in black strap not white. Secondly, the bag's strap has something like untidy joint which I can not see in the real one. Lastly, the pebbly leather of bag has different pattern from the real one too.
Does your bag has something like this???