Antoine Courtois AC421BHRA Bb/F Tenor Trombone

Antoine Courtois AC421BHRA Bb/F Tenor Trombone, Bb/F Tenor Trombone, 'New York’ Model, Cylindrical bore: 13.89 mm, Hand-hammered, one-piece gold brass bell with 215 mm diameter, Brass outer slide, Hard chrome-plated nickel silver inner slide, With brass bow, Quart valve open wrap, Hagmann valve system with progressive bore, Ergonomic, removable hand rest, Unscrewable bell, Clear lacquered, Includes Marcus Bonna case ...