“Brand New Boxed with Certificate of Authenticity”. 2019 Royal Mint Life of Stephen Hawking 50p Fifty Pence Silver Proof Coin. Issuing Country: United Kingdom. Weight: 8.00 Grams / Diameter: 27.30mm. Issue Limit: 5,500 Worldwide. Presented: Original Royal Mint Box with Certificate of Authenticity. In 2019 to celebrate the Life of Stephen Hawking, the Royal Mint […]