Detail 01
16.75mm cup diameter
Narrower than the 17.25mm 1C. Less lip inside the cup, so the high register comes easier and drains you slower.

Independent shopping perspective
A silver-plated 3C trumpet mouthpiece, 16.75mm cup with a barrel backbore. For players who want a bright, projecting sound in a mainstream size.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Narrower than the 17.25mm 1C. Less lip inside the cup, so the high register comes easier and drains you slower.
Detail 02
Middle-of-the-road rim. No wide cushion like the 5.75mm 4X, so flexibility wins over long-set comfort.
Detail 03
Tighter than the 3.90mm on the 1 and 1C. More resistance to push against, which sharpens articulation and control.
Detail 04
Straight taper rather than a V. With the tight throat it gives a centered feel instead of an open, spread blow.
Detail 05
Grippier under the lip than raw brass. It will tarnish, so wipe it down after playing.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Dimensions are identical: 16.75mm cup, 5.05mm rim, 3.70mm throat, barrel backbore. The 3C is brighter with more projection; the 3 blows freer with a smoother sound.
The 16.75mm cup is narrower than the 1 and 1C, which generally makes the upper register easier to hold. It will not replace practice on the range itself.
Yes. Bright, well-rounded, with strong projection across all registers — that is the profile lead and commercial players usually want.
It uses a standard trumpet shank, so it fits standard trumpet receivers. It will not fit a cornet or flugelhorn.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.