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- Marks, Gilbert
Country City London
Symbol cartouche, frame, octagon
Shape cartouche, frame, octagon
Era (1861-1905) e.1885
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- Mauer, Gustav
Country Era 1867-1922
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle, v clipped
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- Merkle, G.
Country City Den Haag
Symbol cartouche, frame, octagon, plus +, rectangle, square
Shape cartouche, frame, octagon, rectangle, square
Era early 20th century
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- Meyer, Georges
Country City Paris
Symbol cartouche, frame, hammer, lozenge, rhombus, tool
Shape cartouche, frame, lozenge, rhombus
Era c.1920-30s
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- Müller, Gustav
Country Era 1867-1922
Symbol cartouche, frame, oval, v clipped
Shape cartouche, frame, oval, v clipped
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- Murk, Gebrs.
Country City Schoonhoven
Symbol cartouche, crescent, frame, hexagon, moon
Shape cartouche, frame, hexagon
Era early 20th century
