Bach French Horn Mouthpiece 7

This is the 7th item from the back.
It is considered a standard size among French horn mouthpieces.
I purchased it to try it out, but it did not suit me.
It is a beautiful item with an actual usage time (playing time) of about 5 hours.
The image of the rim on the second page shows reflections of the lighting around the 10-12 o'clock and 4-6 o'clock positions. These are not scratches.