2020 United States Mint Silver Proof Set OGP. With COA and West Point Nickel. At times, items may tone due to the natural oxidation process that has no adverse effect on their value. If you need to change the address you need to Cancel your order and place a new order using the correct address. I test all of bullion items with Sigma Precious Metal. Any grade indicated is our best judgment, unless it has been graded by a third-party grading service. Our aim is to provide Top Level Customer Service; your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfied. We are NOW Offering. This is NOT the actual item you will be receiving. Photos in this listing may or may not be stock photos. The photos are meant to be an indication of the product you will receive.