The stunt was organised by the Royal Mint to mark the launch of its commemorative 50p Monopoly coin. It challenged onlookers to ‘spot the top’ for a chance to win one of 100 of the commemorative coins. Marianne James, senior vice president of global licensing from Hasbro, said: “Monopoly’s Top Hat is usually found on the board - not dancing through the streets of London. The special coins mark the 90th anniversary of Monopoly. “Just as Monopoly players cherish their winning strategies and favourite game pieces, coin enthusiasts treasure each unique addition to their collection, creating memories that endure through countless games and generations.”