For Sale: 2022 Perth Mint 1oz Gold Swan Coin: $3175 2021 Royal Mint 1/4oz Gold Britannia Coin: $810 2020 Royal Mint 1/4oz Gold Britannia Coin: $800 All coins in mint condition except the 2020 Britannia which has a slight mark on Queens cheek. All coins have been Sigma PMV tested and come in capsules. Plus Post.