Yamaha Convertible Marching BBb Tuba /with case YBB-201MWC

Marching Tuba; key of BBb; silver-plated; full size marching convertible model with concert and marching leadpipes included; 3 nickel-plated pistons; .728" bore; 17-1/2" upright bell; BBC-32 case; 67 mouthpiece