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- Ortner, Ignaz
Country Era 1867-1922
Symbol cartouche, dot ., frame, oval
Shape cartouche, frame, oval
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- Osmers, Frank C.
Country City New York NY
Era c.1922
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- Ostatek, Josef
Country Era 1867-1922
Symbol cartouche, dot ., frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
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- Østern, Bjørn Sigurd
Country Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
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- Österreicher, Moriz
Country Era 1867-1922
Symbol cartouche, frame, rectangle, v clipped
Shape cartouche, frame, rectangle, v clipped
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- Osterweil, Leon
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
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- Oswald, Rudolf
Country Era 1867-1922
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
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- Ott, Franziska
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
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- Ourednik, Josef
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
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- Oving, Bzn. H.E.
Country City Groningen
Symbol cartouche, frame, oval, plus +, rectangle, square
Shape cartouche, frame, oval, rectangle, square
Era early 20th century
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- Redeker & Co., R. E.
Country City Chicago IL
Era c.1922
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- Roschlapil, Oscar
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
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- Ruddman & Orleck
Country City Providence RI
Symbol cartouche, frame, navette, oval
Shape cartouche, frame, navette, oval
Era c.1922
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- Shepard Mfg. Co.
Country City Melrose Highlands MA
Symbol cartouche, diamond, frame, lozenge, rhombus
Shape cartouche, diamond, frame, lozenge, rhombus
Era c.1915, c.1922
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- Snow & Westcott
Country City New York NY
Symbol cartouche, diamond, frame, kite, lozenge
Shape cartouche, diamond, frame, kite, lozenge
Era c.1896