This is a Frankenbone consisting of an Olds hand hammered bell mounted to a king Bell assembly with a king .490 bore slide that is silky, smooth and fast with no issues. Smooth wear On inner tubes as shown, it does not affect the action. Hand hammered bell has a satin look to the finish and missing its lacquer. Slide lock, tuning slide, and water key all work properly. Great playing Trombone with a warm fat sound and slots very well. It comes with a king hard case in serviceable condition. There is no mouthpiece. Thanks for looking.