Conn 28H SN 398414, made in 1952 in Elkhart, Indiana, is a rare and distinctive jazz trombone from Conn’s golden age. Known as the Connstellation, this model was only produced between 1949 and 1953, making surviving examples like this one hard to find — especially in fully playable condition.
It features a 7.5" brass bell and a dual bore handslide, making it comparable in size and feel to a King 2B, but with a darker tonal profile. The bell has a deep vintage patina, a result of both age and a historical lacquer-over process that gives it a unique visual depth. It’s not a lightweight bell — this horn plays with power and richness, ideal for front-line jazz work or section playing where color and presence matter.
The original yellow brass tuning slide had substantial dents when it arrived, which were not cleanly repairable using traditional techniques. Our tech fabricated a custom brass guard, soldered it in place, and left it unlacquered for honesty and durability. The result is a functionally restored, great-sounding instrument that honors its character.
The handslide is excellent — super straight tubes, quick action, and a responsive feel. The instrument has had a full in-house shop service, and plays clean, centered, and meaty — with a gorgeous tone that stands out in any setting.
This horn is perfect for a serious jazz player looking to own something rare, vintage, and full of soul. Comes with a well-fitting vintage 1960s Conn case.
What makes the Conn 28H Connstellation unique among vintage jazz trombones?
The 28H is one of the few Conn jazz models with a dual bore slide and a meaty brass bell, giving it both agility and depth. Its limited production run from 1949–1953 makes it much rarer than the 6H or 32H. Many players find the 28H to be a more robust alternative to the King 2B — with a slightly darker tone and a more commanding presence. This model was built for players who wanted something different, and it remains a sleeper gem in Conn’s historical lineup.
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