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- Arts & Crafts Co.
Country City Hartford CT
Era c.1950
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- Arvai, Armin
Country Era 1867-1922
Symbol cartouche, dot ., frame, oval, v clipped
Shape cartouche, frame, oval, v clipped
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- Arzt, Emanuel
Country City New York NY
Era c.1950
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- Asch-Grossbardt
Era e.1947
Symbol circle
Shape circle
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- Aschjem, Ole Nels
Country City Chicago IL
Era c.1896
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- Ashbee, Charles Robert
Country Era 1863-1942
Symbol cartouche, frame, shield
Shape cartouche, frame, shield
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- Ashmun Co., F.E.
Shape triangle
Symbol triangle
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- Asprey and Co.
Country City London
Symbol cartouche, frame, oval, quatrefoil, triangle
Shape cartouche, frame, oval, triangle
Era 1903-present
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- Asscher, I.J.
Country City Amsterdam
Symbol asterisk *, cartouche, frame, ribbon, star
Shape cartouche, frame, star
Era early 20th century
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- Associate Jewelers Corp.
Country City Pawtucket RI
Symbol cartouche, diamond, frame, lozenge, rhombus
Shape cartouche, diamond, frame, lozenge, rhombus
Era c.1950
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- Associated Jewelers of America
Country City Seattle WA
Era c.1934
-
- Associated Jewelry Mfg. Co. Inc.
Country City Chicago IL
Era c.1950, c.1943
-
- Asta-Tittman Jewelry Mfg., Inc.
Country City New York NY
Symbol crown
Era c.1962
-
-
- Atlantic Jewelry Co.
Country City Providence RI
Symbol crown
Era c.1950
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- Atlas Mfg. Co.
Country City New York NY
Era c.1950