Overview
This King 3B Plus Model 2125 Tenor Trombone, built in the 1980s, features an 8″ gold brass bell and .525 bore handslide, slightly larger than the standard King 3B design. The instrument was finished in unlacquered brass and included a non-original case.
Before sale, the trombone received shop cleaning and mechanical service at The Brass Exchange. The slide and valve systems operated smoothly and reliably following preparation.
The 3B Plus occupies an interesting place in the King lineup, offering a medium-bore alternative for players wanting more breadth than a standard 3B while retaining familiar King ergonomics.
Player Perspective
Medium-bore tenor trombones in the .525 range are popular for players seeking versatility between traditional jazz tenors and large-bore symphonic instruments. The King 3B Plus works well for big band section playing, chamber ensembles, and general use where a slightly larger straight tenor is preferred.
Clean examples from this era remain useful instruments for advancing students and experienced players looking for a dependable King medium-bore tenor.
📸 Photography From Our Early Archive
Some photos on this listing come from the early years of The Brass Exchange, when our fine-art photography of brass instruments was still evolving. While lighting and presentation techniques have improved over time, these images remain part of our shop’s history and document instruments we were honored to handle.
They also reflect our long-standing interest in how to photograph musical instruments clearly and honestly for players and collectors.
🔧 Availability & Archive Status
This King 3B Plus Model 2125 trombone has been sold and is now part of The Brass Exchange Archive of Sold instruments for historical reference.
Archive pages remain published so players, teachers, and collectors can research models and market history. If you are looking for a similar King trombone or considering selling your own instrument, we are always happy to help.
👉 Browse our current trombone inventory here:
https://thebrass-exchange.com/trombones
📚 Historical Insight
Interested in seeing more King trombones from over the years? 🔎 Visit our Historical King Archive to explore past instruments, compare models, and learn more about this classic American maker.
Archive Reference Note
This King 3B Plus Model 2125 Tenor Trombone has been sold and is shown here as a historical reference for players and collectors researching King instruments and their market history.
