Advertising wares were introduced by Royal Doulton from the inception of its Burslem factory in the 1880s. By their very nature, such pieces are extremely scarce. Leslie Harradine adapted the Yardley lavender group as a figurine in 1924. Yardley of London, usually referred to simply as Yardley or Yardleys, is an international English-based company and one of the oldest firms in the world to specialize in cosmetics, fragrances and related toiletries products. Established in 1770, Yardley was a major producer of soap and perfumery by the beginning of the 20th century. In 1921, Yardley received its first Royal Warrant.