-
- Marks, Gilbert
Country City London
Symbol cartouche, frame, octagon
Shape cartouche, frame, octagon
Era (1861-1905) e.1885
-
- Marks, Perry
Country City New York NY
Symbol cartouche, frame, octagon, rectangle, square
Shape cartouche, frame, octagon, rectangle, square
Era c.1934
-
- Marlboro Novelty Co. Inc.
Country City New York NY
Era c.1950
-
- Marlin Jewelers Inc.
Country City New York NY
Symbol fish
Era c.1950, c.1943
-
- Marmorstein, Inc.
Country City New York NY
Era c.1922
-
- Marotti & Bros., Arthur
Country City New York NY
Era c.1922
-
- Marschall, Rudolf Ferdinand
Country City Vienna
Era (1873-1967)
-
- Marsellus & Pitt
Country City New York NY
Era c.1896, c.1915
-
- Marsh & Co., C.A.
Country City Attleboro MA
Era c.1915, c.1934
-
- Marshall Field and Co.
Country City Chicago IL
Era c.1904, c.1915, c.1950
-
- Martelli Jewelry Co.
Country City Providence RI
Era c.1950
-
- Martin-Copeland Co.
Country City Providence RI
Shape oval
Symbol arrow, oval
Era c.1915, c.1922, c.1934
-
- Martin, Edmund
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
-
- Martin, Peter
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
-
- Martinazzi, Bruno
Country City Turin
Era (1923 – )
-
- Martinetz, Franz
Country Era 1867-1922
Symbol cartouche, frame, rectangle, v clipped
Shape cartouche, frame, rectangle, v clipped
