Bach 3 French Horn Mouthpiece

This is a French horn mouthpiece, size 3, for the back.
I tried it a few times, but the rim thickness didn't suit me, so I hope someone else can use it.
The catalog states, Large size, producing a big, rich sound, especially in the low register, but
now I feel the inner rim diameter is a bit smaller than standard.
Some people might feel it's large due to the thick rim.
It allows for smooth airflow and produces a powerful sound.

I considered buying a new one, but I've settled on something else, so I'm selling this.

・Inner rim diameter: 17.4 mm
・Throat diameter: 4.5 mm
・V cup