BRITAIN TO MINT NEW "BRITANNIA" GOLD COIN Britain will from next autumn mint and market a new bullion coin called the "Britannia" containing one ounce of 24 carat gold, together with bullion coins of smaller denominations, a Treasury official said. The new investment coin, to be sold worldwide, will fluctuate in price according to the international price of gold. The smaller coins will be in denominations of a half ounce, a quarter ounce and a tenth of an ounce. REUTER