Coach Earnings Surge 60 Percent  NEW YORK (Reuters) - Coach Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=COH.N target=/stocks/quickinfo/fullquote"&gt;COH.N&lt;/A&gt; on Tuesday posted a  higher-than-expected quarterly profit and forecast a robust  holiday season for sales of its luxury handbags and  accessories, sending its shares up as much as 8 percent.