Bach 34912B Classic 12B Cornet Mouthpiece in Silver Plate

Bach 34912B Cornet Mouthpiece Overview

The Bach 34912B Classic 12B Cornet Mouthpiece is a genuine Vincent Bach silver-plated cornet mouthpiece built around the Classic 12B cup design, with a medium-deep cup and a 15.20mm cup diameter for a balanced blend of tone, response, and intonation. This item is brand new in the original manufacturer’s packaging and is sold by an authorized Bach dealer.

Bach 34912B Cornet Mouthpiece Specifications

• Series: Vincent Bach Classic
• Instrument: Cornet
• Model: 34912B 
• Cup: 12B
• Cup depth: Medium deep
• Cup diameter: 15.20mm
• Finish: Silver plate

Condition

Brand new in the original manufacturer’s packaging

Who the 34912B Cornet Mouthpiece Is For

The Bach 34912B is a silver-plated cornet mouthpiece designed for cornet players who want a Classic-series setup with a medium-deep cup and a 15.20mm cup diameter. It is a strong fit for players who prioritize consistent intonation, clear response across registers, and a uniform timbre that stays centered from low to high range.

This model is commonly chosen by advancing students, serious hobbyists, and professionals who prefer the feel and consistency of genuine Vincent Bach mouthpieces and want a traditional 12B cup profile for cornet literature, band, and ensemble work.

Common Questions About the Bach 34912B

Is the Bach 34912B intended for cornet or trumpet?

The 34912B is a cornet mouthpiece model. Cornet mouthpieces are typically shaped and voiced differently than trumpet mouthpieces, so this model is best matched with cornet receivers and cornet playing characteristics.

What does the 12B cup indicate on this mouthpiece?

The 12B designation refers to the Classic 12B cup design, specified here as a medium-deep cup with a 15.20mm cup diameter. This combination is typically used to balance tonal richness with clean response and stable intonation.

Is this mouthpiece new, and does it include a case?

Yes. This mouthpiece is brand new and includes the original manufacturer’s packaging (listed as the case). No additional accessories are included.

We are proud to be an authorized Bach dealer