This is a slide section from Holton TR156/TR159 (once called "Jay Friedman model") trombone. It has .547"/.559" dual bore and nickel outer tubes.
Not quite sure which Holton models it'll fit other than TR156/159, but I was using it with TR183 bass trombone from 1976. It fit without any modification. I don't know if it fits their other bass trombones, or large tenor trombones. With TR183 bell it was a perfect "small bass trombone." I am sure you could replace the tenon to fit most anything.
In good condition with some wear present. Moves smoothly and seals tight. No plating wear on the inner tubes.
Asking $475 plus shipping, and I will ship in the Slide Doctor box.
Thank you for looking!
FS: Holton .547"/.559" dual bore slide
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FS: Holton .547"/.559" dual bore slide
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Trond

Trond
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FS: Holton .547"/.559" dual bore slide
Sold, please delete.
Thank you!
Thank you!