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- .468” bore
- Traditional "Schmidt"-style 12" bell
- Traditional direct-soldered Geyer-taper mouthpipe with comfortable resistance
- Fixed bell
- All brass construction in raw brass finish
- Adjustable finger hook
- Mouthpipe water key
- Reversible fourth rotor (F/Bb to Bb/F)
- Serial number: 657475
We purchased this instrument directly from the manufacturer and have just serviced it in our shop. It has only seen extremely light use as a demo or display model. In superb condition and ready to play! Comes complete with original case, slide cream, and MC Farkas mouthpiece.
We are proud to be an authorized C.G. Conn dealer
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
C.G. Conn Model 10DYUL 'CONNstellation' Professional French Horn
Conn has been making some of the worlds finest French horns ever since they introduced the 8D back in the 1950s. The 10DYUL is a natural evolution in the process, bringing yellow brass construction and the Geyer configuration for a warmer, more soloistic kind of playing experience. This model is unlacquered for a more vibrant sound.
- .468” bore
- Traditional "Schmidt"-style 12" bell
- Traditional direct-soldered Geyer-taper mouthpipe with comfortable resistance
- Fixed bell
- All brass construction in raw brass finish
- Adjustable finger hook
- Mouthpipe water key
- Reversible fourth rotor (F/Bb to Bb/F)
- Serial number: 657475
We purchased this instrument directly from the manufacturer and have just serviced it in our shop. It has only seen extremely light use as a demo or display model. In superb condition and ready to play! Comes complete with original case, slide cream, and MC Farkas mouthpiece.
We are proud to be an authorized C.G. Conn dealer
Pairs well with
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99

C.G. Conn Model 10DYUL 'CONNstellation' Professional French Horn
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders valued over $99 ship via FedEx 2-Day within the U.S. and via DHL internationally. A physical address (no P.O. Boxes) and signature are required. Smaller accessories ship via USPS (2–5 day service) and do not require a signature if valued under $99. Please see our FAQ for additional details.
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Return Policy
We offer an unconditional 30-day return policy to ensure you’re completely satisfied. If you’re unhappy for any reason, return the item for a full refund or full exchange credit (reeds and other consumables are non-returnable once opened). Every instrument we sell is guaranteed to be free of mechanical defects—if an issue arises, contact us and we’ll either reimburse a local repair or provide a prepaid return label for repair, exchange, or refund. If you simply change your mind, you may still return the item for a full refund, but return shipping costs are the customer’s responsibility unless free returns were purchased through Redo at checkout. Please see our FAQ for additional details.
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Shop Warranty:
Brand new items are covered by the full manufacturer’s warranty unless otherwise noted (see the individual maker for details). Open box, used, and vintage items include a two-year warranty serviced by our in-house repair shop, and we guarantee every instrument will be free of mechanical defects. Warranty coverage does not include damage from accident, misuse, negligence, improper operation, unauthorized alterations or removed serial numbers, normal wear and routine maintenance, environmental damage (including perspiration, corrosion, or extreme temperature and humidity), lacquer or plating wear, or consumable parts such as springs, pads, and felts. Please see our FAQ for additional details.
