YAMAHA YSL-641 Large Bore Tenor Trombone with Case Yamaha professional model large bore tenor trombone manufactured from the 1960s to the late 1970s. Instant purchase is welcome. ■ Item Condition Functionality confirmed. Slide moves without issue. Overall, there are scratches, rust stains, and peeling. There is a small dent in one part (see image 9). There is no damage that would hinder performance. Please check the condition carefully. ■ Item Contents Only the main body and case are included. Please ask any questions in the comments. Thank you.