TAD French Horn Mouthpiece Rim (Gold) FD Flat Type

This is a rim for a French horn mouthpiece.
I bought it as a backup, so it hasn't been used much. I believe it's in good condition.
It seems to be rarely produced now, so I think it's quite rare.
It will be disinfected and cleaned before shipping.

Manufacturer: TAD
Model: FD
List Price: ¥12,100
Rim Inner Diameter: 17.5mm
Rim Thickness: Standard
Rim Shape: Flat