It's no use calling customer service, and the customer service doesn't know. This thing is not a commemorative coin. It is neither issued by the People's Bank of China nor by the Bank of China. It's made by ordinary merchants. If you have the strength, please ask a famous mint to do it. Please check whether AG999 or Ag925 is printed on the front and back. If not, I'm sorry, this thing may only be silver-plated. If there is, it is also made of pure silver. This is just a handicraft, and it has no collection value. I think it was bought by China Bank to send it to customers. Now 100 foreign exchange certificates are very precious. If you can't afford it, give it a fake one.