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- Pefau, Paul
Country City Montreal QC
Shape triangle
Symbol triangle
Era c.1922
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- Platinum Art Co.
Country City Toronto ONT
Symbol cartouche, frame
Shape cartouche, frame
Era c.1922
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- Primavesi & Kaufmann
Country City Montreal
Era e.1954-1988
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- Pugh Co., WM.
Country City Toronto ONT
Symbol circle, line
Shape circle
Era c.1922
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- Richline Group
City Burbank, CA, North York, ON, Tamarac, FL
Country Era Contemporary
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- Riexinger & Heinz Co.
Country City Toront ONT
Symbol bird, fleur de lis, wings
Era c.1915
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- Rogers’ Sons & Co., Henry
Country City Montreal QC
Symbol cross, crown, flag, maltese cross
Shape cross
Era c.1915
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- Rogue, Alex
City Toronto ONT
Country Era c.1922
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- Rowland & Campbell, LTD.
Country City Winnipeg CAN
Era c.1922
-
- Saunders Lorie & Co.
Country City Toronto ONT
Symbol keys
-
- Saunders, H.&A.
Country City Toronto ON
Symbol arrow
Era c.1896, c.1915
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- Smith, Patterson Co., LTD., The
Country City Montreal QC
Symbol arrow, circle, line
Shape circle
Era c.1922
-
- Sweet & CO., LTD., John
Country City Hamilton ONT
Symbol cartouche, circle, double circle, frame
Shape cartouche, circle, double circle, frame
Era c.1922
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- Tisdall, H.W.
Country City Toronto ONT
Shape trapezoid
Symbol trapezoid
Era c.1915
-
- 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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- Traying & Waters
Country City Vancouver BC
Symbol plus +
Era c.1922