Bach Stradivarius Model 42 trombone with F attachment. Based on the serial number, I believe this trombone was manufactured around 1981. The engraving on the bell confirms it was made in Elkarht, Indiana. These trombones have long been the gold standard for orchestral horns. The slide is in excellent shape and slides flawlessly. The F attachment works perfectly. Note that the bell is de-lacquered. Hard case, an unused leather guard set, and a mute are included. I had the horn professionally cleaned prior to sale.