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- Canadian Jewelers Ltd
Country City Montreal QC
Symbol cartouche, circle, frame, lozenge, oval, rhombus
Shape cartouche, circle, frame, lozenge, oval, rhombus
Era c.1915, c.1922
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- Hazekamp, Fa. R.
Country City Groningen
Symbol cartouche, frame, rectangle, square
Shape cartouche, frame, rectangle, square
Era early 20th century
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- Hoope, R. ten
Country City Amsterdam
Symbol cartouche, frame, ribbon
Shape cartouche, frame
Era early 20th century
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- Rothschild & Hadenfeldt
Country City San Francisco CA
Symbol bow, cartouche, frame
Shape cartouche, frame
Era c.1915
