Helena Three Graces 1 Oz coin Silver Proof. Second coin of the Great Engravers Series following a massive success of Una and the Lion. Helena Three Graces 1 Oz Silver Proof Coin with coa and box Low Mintage" is in sale since Thursday, June 3, 2021. This item is in the category "Coins\Coins\British\Proof Sets/Coins\2000s".The seller is "justrightcollectibles" and is located in Reading. This item can be shipped worldwide.