2021 Silver Proof Royal Mint Set Box Booklet & Certificate ONLY. This product data sheet is originally written in English. We would like to offer for sale. 2021 Royal Mint Silver Proof Set Box Booklet & Certificate ONLY. PLEASE REFER TO IMAGES. Original Royal Mint 2021 Silver Proof Box. Thank You For Looking. FROM A SMOKE/PET FREE HOME. Please check out my many other listings! WELCOME TO SIMPLY COINS We would like to offer for sale 2021 Royal Mint Silver Proof Set Box Booklet & Certificate ONLY.