The wonderful and mysterious Leblanc Full Rationale in all its splendor. Some players love these horns and swear by them. Most players have never heard of them let alone had a chance to play one. This one is a gem. Very well cared for as you can see and fully overhauled and up and running.

The tone is rich and very impressive. The scale is very even and overall it is a very fluid and balanced horn. This is a horn to sing on. The keywork is unique and offers many possibilities that other horns don’t in terms of alternate fingerings.

Its a stunningly beautiful horn in wonderful original condition and fully ready for serious and sustained use.

Here is more info on them: The Leblanc Rationale saxophone is known for its unique and innovative keywork system, developed by Vito Pascucci and the Leblanc company. This saxophone was designed to offer advanced ergonomics and improved intonation control. Here are the key features of the Leblanc Rationale saxophone's keywork:

1. Ergonomics: The Rationale saxophone was designed with player comfort in mind. The keywork is arranged to allow for a more natural hand position, reducing strain and fatigue during long playing sessions.

2. Unique Key Mechanism: One of the most distinctive aspects of the Rationale saxophone is its complex key mechanism, which allows for a more consistent and precise fingering system across all registers. This system was intended to improve the accuracy of intonation and make it easier to play difficult passages.

3. Alternative Fingering Options: The Rationale saxophone provides multiple fingering options for many notes, which can be particularly useful for advanced players looking to achieve greater flexibility and control over their sound.

4. Improved Intonation: The innovative keywork system of the Rationale saxophone was designed to address common intonation issues found in standard saxophones. The goal was to produce a more even and consistent tone throughout the instrument's range.

5. Build Quality: As with other Leblanc instruments, the Rationale saxophone is known for its high-quality craftsmanship and durable construction. The precision engineering of the keywork system reflects Leblanc's commitment to producing professional-grade instruments.

6. Complexity: While the Rationale saxophone's keywork offers many advantages, it is also more complex than traditional saxophone key systems. This complexity can make the instrument more challenging to repair and maintain, requiring a technician with specialized knowledge.

Overall, the Leblanc Rationale saxophone is highly regarded for its innovative design and advanced keywork system, making it a unique choice for professional saxophonists seeking a versatile and precise instrument.