Blessing 7C Cornet Mouthpiece, MPC7CCR – Andy's Music
Amazon.com: Silver Trumpet Mouthpiece 7C 5C 3C Trumpet Mouthpiece Set with Box Cleaning Cloth Compatible with Yamaha Bach Conn King Musical Instruments for Beginners and Professional Players 3Pack : Musical Instruments
Amazon.com: Paquete de 3 boquillas de trompeta (3C 5C 7C) con silenciador de trompeta de aluminio ligero apto para Yamaha Bach Conn King accesorios de instrumentos musicales de repuesto, color plateado :
Trumpet Mouthpiece King Trumpet 7C Size Plated | eBay