1998 Gold Proof set, Britannia £25 and a Half Sovereign in Royal Mint case 1998 Gold Proof set, featuring a Britannia £25 and a half sovereign, fdc, housed in a Royal Mint case with certificates. Type: Milled Gold Monarch: Elizabeth II Date: 1998 Price: £750 ENQUIRY FORM To enquire about this Coin please use the form below Your Name* Your Email* Subject Your Message Human test: Which is bigger, 2 or 8?