Boston Series Banjos The name "Boston" Acknowledges the people of Boston who produced many fine Banjos in the earlier part of last Century. The Boston has the same adjustable mahogany neck, ebony fingerboard, mother of pearl dot inlays, and satin finish as the Sierra. The primary difference is in the drum assembly which is a 3/16" thick steel rim and rings like a tone ring. The 24 piece flange and steel rim give you a very bright, sparkling, crisp tone.