-
- Mountain Makers
Country City Ashville NC
Era c.1950
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- Muhr’s Sons, H.
Country City Philadelphia PA
Symbol cross, crown, maltese cross
Shape cross
Era c.1896, c.1915
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- Mulholland Brothers
Country City Evanston IL
Symbol anvil
Era c.1914-1920
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- Murdock Jewelry Co., H.E.
Country City Minneapolis MN
Era c.1934
-
- Muroff Brothers
Country City New York NY
Symbol cartouche, circle, frame
Shape cartouche, circle, frame
Era c.1950
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- Murphy, Inc., John B.
Country City New York NY
Symbol cartouche, circle, frame
Shape circle, frame
Era c.1922
-
- Mussells Co., H.C.
Country City Oakland CA
Era c.1950
-
- Myers Co., S.F.
Country City New York NY
Symbol circle, crescent, globe, moon, star
Shape circle, star
Era c.1896, c.1922
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- Myers, Alonzo W.
Country City Brooklyn NY
Era c.1922
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- Nabstedt Co., Dave
Country City Davenport IA
Era c.1943
-
- Naegele, Eugene
Country City Philadelphia PA
Symbol clover
Era c.1896, c.1915
-
- Napier Co.
Country City Meriden CT
Symbol cartouche, frame, hexagon, laurel, oval, shield, wreath
Shape cartouche, frame, hexagon, oval, shield
Era c.1922, c.1934, c.1950, c.1943
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- Nathan & Berg Inc.
Country City Chicago IL
Era c.1950
-
- National Clasp Co., INC.
Country City New York NY
Era c.1922
-
- National Costume Jewelry Co.
Country City Buffalo NY
Era c.1950
-
- National Gold Chain Co.
Country City New York NY
Symbol cartouche, frame, oval
Shape cartouche, frame, oval
Era c.1922
