Trombone - Brass and from 1950 from the serial number 224652. But in my opinion it is so so to good condition the only major dents are shown in one of the photos on one end. Slide goes in and out without issues.

Bundle Description: CASE Holton Collegiate mouthpieceYamaha Slide
Custom Bundle: Yes
Exact Year: 1950
Color: Brass
Modified Item: No
Brand: Holton
Bell Material: Brass
Trombone Type: Tenor
Skill Level: Intermediate
Model: Collegiate
Country/Region of Manufacture: United States
Finish: Brass
Key: Bb