This is a fantastic King 3B Concert Trombone with serial number 379333, produced between 1. It comes with a newer Protec case and has an advanced level of playing experience. The trombone features a brass body and bell material, with a nickel silver O.S. slide. The brand is King and the instrument type is tenor. It is perfect for brass musicians looking for a high-quality trombone. This musical instrument was made in the United States.46+ Year Music Retailer selling off all used instruments and Music.No major Dings or dents.Please See Pink spots on Slide Bottom bow.I think it was Overhauled at some point.Works fine but I would chemical flush it.Slide stockings good.Thanks please ask questions if you need more info.