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- Hueber, Johann & Söhne
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
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- Kaltenbach, Karl & Söhne
Country City Altensteig, Württemberg
Symbol bird, cartouche, frame, shield, wings
Shape cartouche, frame, shield
Era e.1870
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- Kassov & Shurgin
Country City New York NY
Symbol cartouche, frame, navette
Shape cartouche, frame, navette
Era c.1943
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- Kent & Stanley Co. Ltd.
Country City Providence RI
Symbol animal, bird, eagle, globe
Era c.1896, c.1915
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- Kleinberger & Sturz
Country Era 1867-1922
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
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- Kritzer Stern & Klein Inc.
Country City New York NY
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
Era c.1950
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- Lawton, Spencer & Sherman
Country City Providence RI
Symbol anchor, cartouche, frame, triangle
Shape cartouche, frame, triangle
Era c.1896, c.1915
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- Layman & Straus Co.
Country City Newark NJ
Era c.1915
-
- Lippmann Spier & Hahn Inc.
Country City New York NY
Era c.1934
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- Löwi & Stein
Country Era 1867-1922
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
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- M & S Jewelry Mfg. Co. Inc.
Country City Providence RI
Era c.1950
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- Manchester-Smith Co.
Country City Providence RI
Symbol caduceus, snake, wings
Era c.1915
-
- Maresch & Schweizer
Country Era 1867-1922
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
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- Markowitsch & Sohn
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
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- Measer-Straus Co.
Country City Los Angeles CA
Symbol cartouche, diamond, frame, lozenge, rhombus
Shape cartouche, diamond, frame, lozenge, rhombus
Era c.1950, c.1943
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- Miller-Steinau
Country City San Francisco CA
Era c.1934
