Overview
This Conn 78H medium bore trombone, serial number 248086, was built during the Elkhart era in the 1930s and stands as a remarkably well-preserved example from Conn’s golden age of production.
It retains original lacquer and parts and had received full shop service at The Brass Exchange, including a complete chemical bath and mechanical inspection. Instruments of this age rarely survive in this condition — and even more rarely continue to play with this level of ease and responsiveness.
The slide was outstanding, with no significant plating loss or alignment issues — a defining factor in both performance and long-term value.
Specifications include an 8" yellow brass bell and a .522 bore handslide for small shank mouthpiece. This size represents a classic pre-war orchestral and studio configuration, before the introduction of larger bore F-attachment models like the Conn 88H trombone in the 1950s.
Many early symphonic and studio recordings were made on instruments of this size, giving the 78H an important place in trombone history.
The engraving reflects an earlier Conn style, predating later Art Deco designs, adding to the instrument’s visual and collectible appeal. This example was structurally straight, clean, and sourced from the estate of a respected professional player.
✦ Player Perspective
The Conn 78H sits in a unique space between small-bore agility and large-bore depth — often compared in size to a Bach 36 trombone.
From a playing standpoint:
- Quick response and immediate articulation
- Strong tonal core with excellent projection
- Classic “Conn color” that carries well in both hall and studio
This type of instrument allows a player to build a centered, flexible sound that works across multiple settings.
It is especially well suited for:
- Jazz and commercial work
- Pit orchestra playing
- Chamber and lighter symphonic repertoire
For players who appreciate vintage craftsmanship, this size and era offer a compelling combination of efficiency and tonal personality.
✦ Condition & Shop Work (At Time of Sale)
- Serial number: 248086
- Original lacquer and parts
- Full chemical cleaning and mechanical service
- Excellent slide alignment and action
- No significant plating loss
- Estate instrument from professional owner
- Mouthpiece not included
This was a rare opportunity to experience a highly original Elkhart-era Conn that remained both historically intact and fully playable.
✦ Build & Design Notes
- 8" yellow brass bell
- .522 bore medium bore handslide
- Early Elkhart engraving style
- Small shank receiver
These features represent a transitional design concept — bridging earlier small-bore instruments and the later large-bore orchestral models that followed.
Questions Trombone Players Often Ask
How does the Conn 78H compare to a Conn 6H?
The Conn 6H trombone is smaller (.500 bore), while the 78H (.522) offers more body and projection while maintaining flexibility.
Why are Elkhart Conn trombones so respected?
Conn’s Elkhart era is widely considered its golden age, known for exceptional craftsmanship, materials, and tonal consistency.
Is the Conn 78H still practical to play today?
Yes — medium bore instruments like this remain highly versatile and effective in many modern playing situations.
🔧 Availability & Archive Status
This Conn 78H has been sold and is now part of our historical reference library.
Listings like this help document important models, condition ranges, and real-world examples for players and collectors researching vintage Conn trombones.
If you’re researching the value or history of a similar instrument:
👉 https://www.thebrass-exchange.com/content/used-trombone-prices-brass-exchange
Looking to identify your Conn trombone by serial number?
👉 https://www.thebrass-exchange.com/content/trombones-serial-number-search
📌 Archive Reference & Next Steps
The Conn 78H remains a compelling example of early American trombone design — offering a balance of agility, projection, and tonal depth that continues to resonate with players today.
If you’re exploring similar instruments or building your setup:
👉 Browse current trombone listings 🔎
Have a vintage Conn or similar instrument to sell or evaluate?
👉 Contact us for a valuation and explore your options 📣
