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- Sauer & Co., A.
Country City Cincinnati, OH
Era c.1934 c.1950, c.1943
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- Specialty Jewelry Co.
Country City Attleboro MA
Era c.1922
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- Sputz & Co.
Country Era 1867-1922
Symbol ampersand &, cartouche, frame, hexagon
Shape cartouche, frame, hexagon
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- Standard Jewelry Co.
Country City Attleboro MA, New York NY
Symbol cartouche, diamond, frame, lozenge, octagon, rhombus
Shape cartouche, diamond, frame, lozenge, octagon, rhombus
Era c.1922, c.1937, c.1943
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- Steere & Co., Geo. N.
Country City Providence RI
Era c.1915, c.1922
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- Thiery & Co.
Country City Newark NJ
Era c.1915
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- Toronto Jewelry Mfg. Co. Ltd.
Country City Toronto ON
Symbol cartouche, frame, oval, shape
Shape cartouche, frame, oval, shape
Era c.1915
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- Tostman & CO., E.
Country City New York NY
Symbol horseshoe
Era c.1922
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- Ullman & Co., David
Country City New York NY
Era c.1915
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- Verdi Gem & Jewelry Co.
Country City Los Angeles CA
Era c.1915
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- Winthop MFG. Co.
Country City Attleboro MA
Symbol acorns
Era c.1922
