** Shares of luxury retailer Watches of Switzerland Group WOSG.L up 6.83% at 453.6 p, among top gainers on London's mid-caps index .FTMC
** U.S. President Donald Trump said on Monday that the US is working with Switzerland to lower the 39% tariff rate the country faces on exports to the U.S.
** London-listed co imports luxury watches from Switzerland and sells them in the U.S.
** Up to Monday's close, stock had fallen 24.11%
(Reporting by Simone Lobo)
((Simone.Lobo@thomsonreuters.com, +919920570373))