100 year old liquor bottle decanter with silver thistle pattern overlay

Does anyone have any information on this liquor bottle/decanter marked EAM on the bottom of the bottle with a thistle pattern silver overlay? I don't see any seam in the bottle and there are no markings on the silver overlay. It is about 12" tall. I am researching this bottle for a friend who's mom came to America from Scotland with her WWI G-I but feels pretty sure it was purchased in America filled with Scotch whiskey but is probably over 100 years old.