The reply to the post is as follows:

1. I have an article "The latest YAMAHA trumpet series sheet music" on the Chinese Wind Music Network. You can take a look, maybe it will be useful. You will have reference value;

2. The common YAMAHA trumpet mouthpieces are from No. 11 to No. 17 - No. 11 is the smallest and No. 17 is the largest.

For your reference.