Birkin bags can double in value in 5 years -- and are a better investment than gold: luxury expert

Hermès’ highly coveted Birkin handbag becomes even more coveted after it leaves the store — doubling in value in as little as five years, according to a luxury expert. James Firestein, founder of luxury resale and authentication platform OpenLuxury, told Fortune that the steepest price increase he has ever witnessed when a Black Togo 30...