I am looking at buying a pre-loved pair of low top sneakers - bought form Harrods with the receipt etc. One thing that is troubling me is that the serial number is on a sticker on the under side of the tongue. I have never owned any Chanel sneakers/trainers so don't know if this is normal or not. I have seen the same type advertised on other sites and they too have the number on a sticker under the tongue. I have attached a picture of what I am seeing and would appreciate your opinions as to whether this is normal. Thank you
