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This is a strange knife I found at a local sale, it is sort of triangular with a sliding blade, that measures how deep the knife goes in to something. It is marked "E.M.Co." and "Pat. Sept 3 '72". Markings are on both sides. The body is copper which ...

Hi- this is a beautiful old pressed glass dish (like a powder jar but twice as big), with a maker's mark on the underside of both the bottom and the lid - looks like a triangle or pyramid shape, has absolutely no letters or numbers or other marking b...