The Root Briar finish requires a perfectly clean bowl with excellent graining. Therefore, it is the most expensive of the Dunhill pipes. Introduced in 1931 and highly prized because the grain is more pronounced in this finish. Corsican briar was most often used for the Root finish, since it was generally more finely grained. This is a rare finish, due to the scarcity of briar suitable to achieve it. These pipes are normally only available at Company stores, or Principle Pipe Dealers.