Austria’s mint is running 24 hours a day as global mints from the U.S. to Australia report climbing demand for gold coins even while Goldman Sachs Group Inc. says this year’s price rebound will end. Austria’s Muenze Oesterreich AG mint hired extra employees and added a third eight-hour shift to the day in a bid to keep up with demand. Purchases of bullion coins at Australia’s Perth Mint rose 20 percent this year through Jan. 20 from a year earlier. Sales by the U.S. Mint are set for the best month since April, when the metal plunged into a bear market. Global mints are manufacturing as fast as they can after a 28 ... (full story)