An aged piece of wood with rusted nails in it - Nattawut Neamkleang/Getty Images It sounds a little like something out of a Sherlock Holmes novel – the ability to tell if an antique couch is a fake by ...

It sounds a little like something out of a Sherlock Holmes novel – the ability to tell if an antique couch is a fake by spotting the brand-spankin' new nails that hold one of the sofa's arms in place.