Overview
The Courtois AC430-TLR is a professional-level small-bore jazz trombone built in Amboise, France, reflecting the refined tone and ergonomic feel that define Antoine Courtois craftsmanship. This model features a 7.76″ one-piece rose-brass bell paired with a lightweight yellow-brass slide — a specification favored by commercial and straight-ahead jazz players who value agility, fast response, and tonal nuance.
This example was a single-owner instrument and completed full shop preparation prior to its placement into the archive, including a chemical bath and mechanical inspection. The nickel-silver grip areas were re-lacquered for a clean appearance, and overall lacquer condition on the bell and slide was assessed as very good, showing only minor cosmetic aging consistent with careful use. No structural repairs, dents, or solder work were present at the time of sale.
The lightweight yellow-brass slide exhibited no plating wear or alignment concerns, and both inner and outer tubes passed inspection in our shop. In playing condition, this AC430-TLR delivered an efficient feel with crisp slotting and a warm, singing core — attributes shaped by the rose-brass bell alloy, which introduces a slightly darker, more complex overtone profile while still retaining the ability to brighten when pushed.
Why This Model Matters
New Courtois AC430-TLR models sit in a similar quality tier as Shires, Greenhoe, and Edwards in the U.S. market, and are sought after by players who appreciate European-built tone and handcrafted resonance. This archived example provides a point of reference for musicians researching model characteristics, historical build quality, or rose-brass bell response in the .500-bore category.
Included at Time of Sale
• Original factory case (good condition)
• Mouthpiece not included
FAQ Reference
• What does “TLR” designate? – It identifies the .500 bore lightweight tenor configuration with rose-brass bell.
• How does rose brass change the sound? – Higher copper content (≈85–90%) tempers high overtones, adding warmth and color while remaining capable of commercial brightness.
• Where are Courtois trombones made? – Amboise, France — known for refined tone and high-quality build.
• Player suitability? – Well-suited to college-level musicians, pros, jazz section leaders, and commercial soloists seeking a lightweight .500 bore horn with tonal richness.
Archive Placement Note
This Courtois AC430-TLR has been sold and is preserved here in our Archive of Sold Instruments to support research, comparison, and historical reference for players and collectors.
Looking for something similar?
Browse available jazz trombones 🔎 Do you have trombones or low-brass instruments you’re considering selling or trading? ✍️ Start the conversation — we’d be glad to help.
🏅 Since 2010, musicians worldwide have trusted The Brass Exchange for accurate descriptions, meticulous inspection, and musician-level setup standards.
