DETROIT – The pair of allegedly rare Air Jordan sneakers arrived last month to the bunkerlike Authentication Center of StockX, one of Detroit's fastest-growing startups.
The black-and-red Jordans were purportedly from 1995. For sneakerheads who collect such things, that's close to antique.
If these shoes were authentic, they might fetch $500 on StockX's online marketplace, which functions like a stock market for the reselling of hard-to-find sneakers, sportswear, watches and handbags.
But this pair didn't pass the smell test.
One of the center's "authenticators" took a whiff of the Jordans and immediately knew something was off. Smell is one of the 25 to 30 indicators they can use to distinguish a legit shoe from a cheap knockoff.
"It just had a very distinct smell that we hadn't smelled before," recalled sneaker authenticator Sadelle Moore, 31, of Detroit, "so we knew automatically that was fake."
This army of dozens of merchandise authenticators form the backbone of StockX and its effort to become the world's leading resale marketplace for scarce consumer goods.
Launched in February 2016 with just a handful of employees, StockX has grown to 370 employees, including about 40 workers at its western U.S. authentication center in Tempe, Ariz.