Welcome to DJM Coins - our aim is to offer excellent quality items at extremely competitive prices. 1998 Silver Proof Britannia 1oz coin. Condition Details: Coin is in Proof FDC condition Graded PF70 Ultra Cameo No Case or COA. Postal services offered depend on the total cost of items, and the size and weight of the package. If we can't post the same day, we will always post the following day.