I have a coffeepot, teapot and creamer that bear what I believe to be maker's mark of FM, along with duty mark, city mark, and sterling mark.
Could you confirm the maker and approximate date of the teapot?
(admin photo edit - images too large - insert as link only - see Posting Requirements)
http://i48.tinypic.com/6sutr6.jpg
http://i47.tinypic.com/5vudmu.jpg
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