Rare 1914 Pocket Watch Performs An Incredible 'Party Trick'

Appraiser Richard Price examines an exceptional 1914 pocket watch belonging to the owner's grandfather. Complete with its original box and enamelled family crests, this remarkable heirloom has an unexpected feature that leaves everyone smiling. But what valuation will Richard place on this extraordinary piece of English watchmaking? Filmed at Balmoral Castle in Scotland in 2015.