The Yamaha Allegro Trombone model YSL-548 and serial number is 429492! This is a high-quality brass instrument with a large bore size, perfect for tenor voices. This unit comes in a luxurious gold color with a lacquered finish, adding a touch of elegance to any musician's collection. The set includes 2 mouthpieces a size 48L & a cleaning kit that includes brushes, liquid cream, also polishing gauze, and a Yamaha polishing cloth and comes with trombone super slick cream! Comes with a stylish case with black furry interior, making it convenient for players to practice and perform with ease and in style!! With its rotary valve type and F attachment feature, this Yamaha trombone offers a rich sound quality that is sure to impress audiences. Made in Japan, this instrument is a top choice for brass enthusiasts looking for a reliable and visually appealing trombone. Weighs around 3.5 pounds on its own and roughly 12.5 pounds with the case and all equipment!