ZIMBABWE'S central bank said it would start selling gold coins this month as a store of value to tame runaway inflation, which has considerably weakened the local currency. The central bank governor John Mangudya said in a statement on Monday that the coins will be available for sale from July 25 in local currency, U.S. dollars and other foreign currencies at a price based on the prevailing international price of gold and the cost of production. The "Mosi-oa-tunya" coin, named after Victoria falls, can be converted into cash and be traded locally and internationally, the central bank said. The gold…