Bach Cornet Mouthpiece 7E GP GP... 24-karat to pure gold plated finish. This is applied after purchase, when new. There are many scratches and scuffs. I think there are no problems with playing. Personally, I think I used it quite cleanly. However, since it is a used item, I would like to sell it to someone who understands. I am very sorry, but... Please refrain from negotiating discounts. Thank you very much.