Yamaha YSL-354 Trombone Near Mint Condition. The YSL-354 is recognized as the top-of-the-line student trombone. My trombone is as close to mint condition as you can get (See photos). It comes with 6 1/2 AL and Yamaha 48 mouth pieces.It also comes with cleaning equipment, slide lube, and four Rubank Method books. This item is in the category "Musical Instruments & Gear\Brass\Trombones". The seller is "moco59" and is located in this country: US. This item can be shipped to United States.