Overview
Paris-made Antoine Courtois 420BE professional large bore tenor trombone, serial number 343344. This pre-owned instrument has recently received full shop service including chemical cleaning, rotor service, and slide adjustment.
The 420BE features an open wrap F-attachment, .547-inch large bore slide, traditional rotary valve with mechanical linkage, and an 8½-inch yellow brass bell. The instrument also features a lightweight outer slide, Saturn water key, and curved hand grip for added comfort.
Courtois trombones have never been especially common in the United States, but those familiar with the brand understand that these instruments belong firmly in the professional category. Most importantly, this trombone plays exceptionally well and is ready for immediate use.
Condition Summary
Condition is very good overall with only minor cosmetic wear consistent with normal use.
The slide is one of the strongest features of this instrument. It is straight, true, properly aligned, and free from inner slide tube plating defects. There is no evidence of prior slide damage.
The rotor operates properly, the linkage is responsive, and all playing components have been serviced and inspected prior to listing. Some lacquer loss and early natural patina are visible on portions of the bell flare, giving the instrument character without affecting performance.
A Protec Max case in excellent condition is included.
Player Perspective
This is the type of instrument that makes a great deal of sense for a player who wants a professional tenor trombone but does not necessarily need to purchase a factory-new instrument.
It would be an excellent choice for an advancing student moving into a first professional-level trombone, as well as educators, serious amateurs, and professional musicians seeking a dependable large bore tenor for orchestra, concert band, chamber music, church ensembles, solo literature, and musical theater work.
At this level, the discussion becomes less about brand recognition and more about playability. Does the instrument respond properly? Is the slide excellent? Does it produce a broad, open sound and allow the player to perform with confidence?
This Courtois checks those boxes. The response is immediate, the sound is centered and open, and the instrument feels every bit like the professional tenor trombone it was designed to be.
Value Perspective
Current production Courtois 420-series professional tenor trombones sell for substantially more depending upon configuration and valve design.
This Paris-made 420BE offers an opportunity to acquire a professional European-built tenor trombone at a fraction of the cost of a comparable new instrument.
For players shopping in the same general range as a nice used Bach 42BO, Conn 88H, or Yamaha Xeno, this Courtois deserves serious consideration. It is a professional-level instrument that remains somewhat overlooked in the United States, creating an excellent value opportunity for the right player.
Includes
• Antoine Courtois 420BE Professional Tenor Trombone
• Protec Max Case
• Mouthpiece Not Included
Questions Players Often Ask
Is this a professional model?
Yes. The 420BE is a professional large bore tenor trombone built in Paris, France.
Has the instrument been serviced?
Yes. The instrument has recently undergone complete shop service including chemical bath, rotor service, and slide adjustment.
How is the slide condition?
Excellent. The slide is straight, properly aligned, and free from inner slide tube plating defects.
Is this a good choice for an advancing student?
Absolutely. This would make an excellent first professional-level tenor trombone for a serious advancing player.
What type of valve does it have?
The instrument features a traditional rotary valve with mechanical linkage and open wrap F-attachment tubing.
🛡️Why Players Trust TBE
Since 2010, The Brass Exchange has specialized in professional and vintage brass instruments for advancing students, educators, collectors, military musicians, university professors, and professional performers.
Every instrument is carefully evaluated, accurately represented, professionally photographed, and described in detail so buyers can make informed decisions with confidence.
📦Fulfillment & Ordering
Orders may be placed securely through The Brass Exchange website. Once submitted, each order is reviewed and confirmed prior to shipment. Customers receive an email confirmation outlining the next steps in the process.
Most in-stock instruments ship within 1–2 business days via FedEx. Telephone orders are also welcome during normal business hours.
Next Steps
Interested in a trade? The Brass Exchange accepts select trade-ins. Simply use the Trade-In Form located next to the Add to Cart section to tell us about your current instrument.
Would you like to explore other Antoine Courtois trombones that have passed through our shop over the years? Visit our Archive of Sold Instruments to review previous examples, specifications, photos, and configurations.
For players seeking a professional Paris-made large bore tenor trombone with excellent playability, fresh service, and outstanding value, this Courtois 420BE deserves serious consideration.