- Description 2006 Proof Gold Britannia 4 Coin Set Boxed This stunning four Gold Britannia coin Proof set from 2006 is boxed with a certificate of authenticity. The Britannia set contains four gold coins; One ounce, Half Ounce, Quarter Ounce and a Tenth Ounce. The coins are presented in a beautiful leather effect display case and is issued with a Certificate of Authenticity.
