silver platter with monogram? age?

Hi, I am new to this site and know very little about this platter/ tray and hope someone can help. this platter is silver plated, over a brass color type metal. there are only a small spots where the silver is worn. The tray is 19inch X 14inch. the name on the back is hard to read and also a Z or N is marked but is about 9inches away and very small 1.5mm. The monogram is to fancy for me to read, two small letters are shown inside the monogram: D, E. …any information would be greatly appreciated. thanks-Eric
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this is the other mark. any body have info? thanks -eric
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