Along with Louis Vuitton and David Yurman, which reopened at The Westchester in White Plains toward the end of last year in significantly renovated spaces, Tourneau is back. Only it”™s no longer Tourneau but Bucherer 1888. The largest authorized watch retailer in the United States features such brands as Baume & Mercier, Cartier, Longines and Rolex. Hours are noon to 8 p.m. Sundays, 10 a.m. to 8 p.m. Mondays through Thursdays and 10 a.m. to 9 p.m. Fridays and Saturdays.