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- American Jewelry Co.
Country City Cincinnati OH
Era c.1896, c.1904, c.1915, c.1922
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- Americana Watch & Jewelry Mfg. Co.
Country City New York NY
Era c.1950
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- Americus Watch Co.
Country City Detroit MI
Symbol bird, eagle
Era c.1934
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- Anderson Co. Inc., Knut H.
Country City Worcester MA
Era c.1934, c.1943
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- Anderson Co., Inc., W.R.
Country City Chicago IL
Era c.1943
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- Anderson Jewelry Co., L.D.
Country City Reading PA
Era c.1915, c.1922, c.1931
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- Anderson, Arthur M.
Country City Joliet IL
Symbol cartouche, circle, frame
Shape cartouche, circle, frame
Era c.1922
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- Anniversary Pearl Co.
Country City New York NY
Era c.1950
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- Annunziata, M.
Country City Newark NJ
Symbol cartouche, circle, frame, wreath
Shape cartouche, circle, frame
Era c.1934
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- Anshen Co. Inc, L.J.
City Providence RI
Country Symbol cartouche, circle, frame, rope
Shape cartouche, circle, frame
Era c.1915, c.1922
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- Anson Inc.
Country City Providence RI
Era c.1950
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- Ansul-Craft Inc.
Country City Providence RI
Era c.1950
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- Anthony Creations Inc.
Country City Providence RI
Era c.1950
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- Anzelewitz & Co., A.
Country City New York NY
Symbol flower
Era c.1904, c.1915, c.1922
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- Apffel Co. Inc., James A.
Country City Los Angeles CA
Symbol dash or hyphen –
Era c.1950, c.1943