This is a YAMAHA tenor trombone (medium-bore) "YSL8440" manufactured in the 1980s! It was the top-of-the-line model at the time and is said to be the best medium-bore tenor trombone Yamaha ever made. Truly a masterpiece. [Product Condition] There are minor scratches from normal use, but there is no damage that would hinder playing, and this trombone can still be used actively. The slide and tuning slides have been adjusted by a repairman. The slide moves very smoothly without any issues! It has been thoroughly play-tested, so it's ready to be used immediately. Accessories include a hard case, mouthpiece, grease, and cleaning rod. Please check the photos carefully and understand that this is a used item, although it has been adjusted, before purchasing.