Tenor Trombone small bore. This is a classic Rudy Muck Citation trombone that features a dual bore slide and a Nickel bell. Recently overhauled by Eric Edwards, the slide works well and has little signs of wear. Judging from the serial #204046, I believe this dates it back to the early fifties. Rudy Much was a German instrument builder that contined production in New York. The Muck 20 mouthpiece is included with the purchase price. Considering the horns age, the lacquer is in surprisingly good shape and the mother of pearl located on the slide lock and the bell attachment screw, are just a few examples of quality craftsmanship. The dual bore nickel slide is also a nice touch...I believe the bore size to be 508 and 525. Unfortunately, there is no case but will be packed professionally thus must raise the price a tad.