This unlacquered refurbished/chemically cleaned Olds trombone from Los Angeles, Ca. dates back to 1936. It's chrome plated fluted slide is in great shape with no pitting and the all red brass trombone has just a few small dents. Plays very warm and has a 7 and a half inch bell with a dual bore slide size of 495/509. The exact serial number is 7 1/2 LM 101##