Well back in the 1980s my mom was a clerk at a Jordan Marsh story that turned into Macy's selling men's clothing.

She would rail against fakes and would show you how the seams and other details were different and how, looking close, the difference was obvious.

My Uncle Dick, the oldest of the brothers, bought three fake Rolexes from the back of a truck on a trip to see my Great Aunt Simone in NYC. He thought he got a steal. Two months later he reported that they didn't run anymore!