This is the finest Conn 12H we have seen at The Brass Exchange—both visually and tonally. Made during the Elkhart Era, this small bore trombone is a true gem for jazz players and collectors alike. It features the original 8" Coprion bell (copper-plated seamless bell flare) known for its brilliance and projection. Despite its compact size, this horn packs a punch.
Slide is in excellent condition with smooth action and precise alignment. There are no signs of prior repair or trauma, and all parts are original including the two-piece gold counterweight, which is highly sought after. The engraving is deep and clean with distinctive Art Deco styling unique to the period.
This 12H shines in small group jazz, blues, or big band settings. It easily cuts through amplified instruments when needed, yet offers warmth and control for more subtle playing. Often compared to the King 2B or Conn 4H, the 12H stands out for its tonal power and sonic edge.
Includes a rare cherry-colored vintage woodshell coffin case in excellent condition. The condition and originality of this instrument make it equally suited for the gigging musician and serious collector.
What is special about the Conn 12H Coprion bell? The Coprion bell is made from a seamless sheet of copper bonded directly to the flare, resulting in incredible projection, brilliance, and tonal bite. This design enhances upper overtones and is favored in commercial and jazz settings.
How does the 12H compare to the King 2B or Conn 4H? While similar in bore size and agility, the 12H offers a more aggressive sound due to the Coprion bell. It projects more easily, making it a powerful option for lead and solo work.
Is this a good choice for modern players? Absolutely. Though vintage, the 12H remains highly playable and versatile. It responds well to modern small shank mouthpieces and suits a wide range of musical styles.
This Conn 12H has been sold and is now part of our Archive of Sold Instruments. 🔎 See available trombones at The Brass Exchange
