Asia shares eke out 19-month top, cautious ahead of Yellen

Asian shares inched to 19-month highs on Tuesday as the potential for economic stimulus in the United States underpinned the dollar, bond yields and Wall Street stocks. Japanese shares also ran into trouble after Toshiba Corp delayed an anxiously-awaited earnings release, including details of a multibillion dollar charge related to cost overruns at its U.S. nuclear arm. The Nikkei slipped 0.7 percent as Toshiba shed more than 8 percent under the weight of sell orders.