-
- Columbia Finding Co.
Country City Newark NJ
Era c.1943
-
- Comet Ring Mfg. Co. Inc.
Country City Buffalo NY
Symbol cartouche, frame, pear shape, shape
Shape cartouche, frame, pear shape, shape
Era c.1950
-
- Comfort Collar Clip Co.
Country City Chicago IL
Era c.1934
-
- Complete Ring Co. Inc.
Country City Newyork NY
Era c.1950
-
- Comstock-Wood Co.
Country City Providence RI
Era c.1934
-
- Concord Mfg. Corp.
Country City Providence RI
Era c.1950
-
- Conley Co.
Country City Spokane WA
Era c.1950
-
- Conn Inc., A.H.
Country City Chicago IL
Symbol cartouche, circle, frame
Shape cartouche, circle, frame
Era c.1934
-
- Continental Jewelry Co.
Country City Buffalo NY
Era c.1934
-
- Cook, David N.
Country City Salem MA
Era c.1896
-
- Cooke Co., C.H.
Country City Providence RI
Symbol banner, crest, laurel, wreath
Shape crest, shield
Era c.1896, c.1915
-
- Cooke, Harding Chain Co.
Country City Attleboro MA
Era c.1934
-
- Cooke, Joseph
Country City Philadelphia PA
Era c. 1784
-
- Cooper & Forman
Country City New York NY
Era c.1896, c.1915
-
- Cooper, F.J.
Country City Philadelphia PA
Symbol cartouche, diamond, frame
Shape cartouche, diamond, frame
Era c.1946
-
- Cooperman & Co., Arthur J.
Country City New York NY
Era c.1950, c.1943
