2022 Platinum Jubilee Five Ounce Silver Proof Coin - Harrington and Byrne Edition This stunning 2022 Platinum Jubilee Five Ounce Silver Proof Coin from Harrington and Byrne celebrates Queen Elizabeth II's 70th anniversary on the throne-a once-in-a-lifetime event. Crafted from 999 fine silver, this coin is an excellent addition to any collection, commemorating a historic moment in British royal history.