Erstwilder Big Ben Enamel PinAffectionately known as Big Ben, the Great Clock of Westminster chimes every 15 minutes and rings on the hour. No excuse to be late! 49mm x 12mm enamel pin From Erstwilders London Calling collection. A celebration of all things infamous and iconic to London, England. The collection tells the collection tells the story of a happy go lucky traveller, visiting the vibrant bustling city of London, along with a little time spent in the English countryside.