Bach Bb/F tenor trombone TB503B TB503B

Bb/F tenor trombone TB503B TB503B, VINCENT BACH. Quart valve, open-wrap. bore .547' = 13.9mm. brass bell ⌀. 8.5'' = 216mm. nickel silver inner slide, hard chrome-plated. nickel silver outer slide. finish: clear varnish. original VINCENT BACH 6 1/2AL mouthpiece and slide grease. lightweight case with backpack straps. . .