Which has a bigger cup — Bruno Tilz 211-B 3 or Bruno Tilz 211-C 3?

Both mouthpieces have virtually identical cup diameters at 17.00 mm / 0.6693 in.

How does cup depth compare between Bruno Tilz 211-B 3 and Bruno Tilz 211-C 3?

Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.

Name: Bruno Tilz 211-C 3
Brand: Bruno Tilz

Both mouthpieces share similar core dimensions — the differences are in the details.

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Bruno Tilz 211-B 3

• French Horn

Catalog

Finish—

Mouthpiece B

Bruno Tilz 211-C 3

• French Horn

Catalog

Finish—

Both mouthpieces are categorized as "Catalog" — the physical dimensions above will determine which suits your embouchure and playing style better.