The FBI last week appealed for the publics help in catching as many as six jewel thieves in hooded sweatshirts who have snatched $5.1 million worth of mens watches, bracelets, and rings from dozens of stores from New Hampshire to North Carolina. The robberies, which began more than two years ago, follow a distinct pattern. The thieves strike stores before they open, usually in malls that are close to major roads for a quick getaway. They cut the security gates and grab mostly mens watches, especially what one investigator called the poor mans RolexMovado watches, which have no serial number and can be resold for $500. The crew completes each robbery in about four minutes. This isnt luck, one FBI official said. You dont do 56 robberies without being caught.