Royal Mint Great Engravers "Three Graces" 2020 Silver Proof 2oz Coin NGC PF70. The item "Royal Mint Great Engravers Three Graces 2020 Silver Proof 2oz Coin NGC PF70" is in sale since Saturday, April 24, 2021. This item is in the category "Coins\Coins\British\Proof Sets/Coins\2000s". The seller is "mandmspeedservices" and is located in Cardiff. This item can be shipped worldwide.