Boccaglio BBA Berkeley tromba pesante D2H (con tubi di piombo stile Monette incisione)
Mystery Bb Ab Switching Trumpet Heavy D2H (w/Extra Engrave Monette Leadpipes) BerkeleyWind just design this first one in the Wold's Special trumpet, can help you switch 2 keys (either Bb and C ) or Bb and Ab in half a second.