ZURICH, Nov 11 (Reuters) - Switzerland could agree a

deal with the United States to lower U.S. tariffs on Swiss

exports to 15% as early as Thursday or Friday this week, a Swiss

source told Reuters on Tuesday.

The source said the deal could also come early next week,

but cautioned an agreement to lower tariffs from the current 39%

was not set in stone until U.S. President Donald Trump had given

his approval.