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- Whitney & Co., F.G.
Country City Attleboro MA
Symbol cartouche, diamond, frame, lozenge, rhombus, star
Shape cartouche, diamond, frame, lozenge, rhombus, star
Era c.1896
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- Zwollo, Frans
Country City Various
Symbol axe, cartouche, diamond, frame, hexagon, quatrefoil, rectangle, rhombus
Shape cartouche, diamond, frame, hexagon, rectangle, rhombus
Era (1872-1945)
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- Zwollo, Jr. F.
Country City Oosterbeek
Symbol cartouche, diamond, frame, lozenge, rhombus
Shape cartouche, diamond, frame, lozenge, rhombus
Era early 20th century