Duke of Edinburgh At Wool Exchange -- The Duke of Edinburgh (centre) -- on a surprise visit to the London Wool Sales (wool exchange) in Coleman Street, City of London -- listens attentively as fine points of sale and purchase are explained to him. In view of his forthcoming tour of Australia, one of the world's principal wool growing areas, he took a keen interest in the proceedings, from a seat among the wool buyers from Yorkshire, France, Belgium and other countries. December 5, 1951. (Photo by Reuterphoto).