Black patent leather pumps

This pair was a gift but it is the wrong size so i have only worn them for photoshoots. I do not have a box or anything 140mm Patent Pumps Black heel height : 4+ inches size 36 fits someone who is size 7 I can not 100% vouch for its authenticity since it was a gift from a friend and i have no receipt. But perhaps you will know better and make an educated decision based on your knowledge. Not a big shoe person so I can't help much.