Overview
This Conn 78H medium bore trombone, serial number 248086, was built during the Elkhart era in the 1930s and remains a remarkable survivor. It retains original lacquer and parts, and has just received full shop service here at The Brass Exchange, including a complete chemical bath and mechanical check.
It’s amazing that an instrument of this age has held together so well — and even more amazing that it still plays this easily and responsively. The slide is in outstanding condition with no significant plating loss or alignment issues. Simply put, it’s one of those horns that reminds you why Conn’s Elkhart shop earned its reputation.
Specifications include an 8" yellow brass bell and a straight-bore .522 handslide for small shank mouthpiece. This was a classic orchestral and studio size before the large-bore F-attachment era took hold in the 1950s with models like the 88H. Many early symphonic recordings were made on horns just like this.
The engraving is the earlier Conn style that predates the later Art-Deco designs, giving the horn extra visual character. Structurally it is straight, clean, and beautiful — both a collectible example and a horn you could absolutely play every day.
This instrument came from the estate of a respected professional player and clearly lived a careful life.
Player Perspective
The Conn 78H sits in that sweet spot between small-bore agility and large-bore depth. It’s about the size of a Bach 36, with a tone that carries easily but still blends beautifully in a section.
From a player’s standpoint, this is the type of horn you could build a sound around. It speaks quickly, holds together at volume, and has that unmistakable Conn color that shows up clearly in a hall or on a microphone.
If you play jazz, commercial, pit orchestra, or lighter symphonic literature, this size horn makes a lot of sense — especially if you appreciate vintage craftsmanship.
FAQs
How does the Conn 78H compare to a Conn 6H?
The 78H is slightly larger (.522 vs .500 bore) with an 8" bell. It offers more body and projection while still keeping the flexibility that Conn small-bore players love.
Why are Elkhart Conn trombones so respected?
Conn’s Elkhart production era is considered their golden age. Build quality, materials, and tonal character from this period are still admired by players and collectors worldwide.
Is the Conn 78H still practical to play today?
Absolutely. Many medium-bore horns like this work beautifully in jazz band, pit orchestra, chamber settings, or as a main horn for players who prefer a lighter feel.
Condition Summary
• Serial number 248086
• Original lacquer and parts
• Full shop service with chemical cleaning
• Excellent slide alignment and action
• No major plating defects
• Estate instrument from professional owner
• Mouthpiece not included
A rare chance to own a beautifully preserved Elkhart Conn that is both historically interesting and musically inspiring.
If you’re researching the value, worth, or history of a Conn trombone like this — or wondering how much a similar horn might sell for — we’re always glad to help.
👉 Contact us to discuss your instrument or collection:
https://www.thebrass-exchange.com/contact-us
Or browse current inventory here 🔎
https://www.thebrass-exchange.com/trombones
