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Ball Columbus Elgin Hamilton Hampden Howard (Keystone) Illinois Marion Rockford Seth Thomas South Bend Tremont & Melrose Waltham

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A. Anzelewitz & Co. A. Jaffe & Son, Inc. A. Kamion A.A. Robert & Foster A.L. Ducommun A.M. Bachrach Adolph Bulova American Waltham Watch Co. American Watch Case Co. American Watch Case Co. of Toronto, Ltd. Andrew K. Shiebler & Son Apex Watch Case Co. Appleton, Tracy & Co. Arnold Robert Association of Silver Case Manufacturers Atlantic Watch Case Co. Avery & Brown Avon Watch Case Co. Baldwin & Co. Ball, Parker & Waters Ball, Steffany & Co. Bates & Bacon Bay State Watch Case Co. Bayer, Pretz, Felder & Mills Becker-Heckman Co. Bell & Co. Bell Watch Case Co. Belove Watch Case Co., Inc. Bernard Levy Berthoud, A. Bigalke & Eckert Co. Blauer & Sperry Blauer Watch Case Co. Bojar Co. Booz & Co. Booz & Hagstoz Booz & Thomas Boss Watch Case Co. Boston Watch Case Co. Bowman Bowman & Everts Brennan, Michael Brooklyn Standard Watch Case Co. Brooklyn Watch Case Co. Buckley, Preston & Tracy Byron L. Strasburger & Co. C. & C.P. Warner C. & E. Tracy C. Jacot & Bro. C.A. Pequignot C.E. Hall & Co. C.K. Colby C.R. Smith & Sons C.W. Westphal California Watch Case Co. Camm Watch Case Co. Capital Watch Case Co. Catlin Celestine Jacot Central Watch Case Co. Charles C. Glatz Charles L. Thiery Charles L. Thiery Charles Schwitter Chas H. Stone Chicago Watch Case Co. Cohen & Co. Colby & Johnson Commodore Watch Case Co. Constant Gigon Courvoisier & Berthoud Courvoisier & Wilcox Courvoisier & Wilcox Manufacturing Co. Crescent Watch Case Co. Criterion Watch Case Co. Crosby & Mathewson Cross & Beguelin Crowell & Dunkerly D. Bournique D. Ornstein & Son, Inc. D.T. Warren & Co. David Louis Huguenin David Marx Denver Watch Case Co. Diel Watch Case Co. Inc. Dubois Watch Case Co. Ducret & Leichty Dueber Watch Case Mfg. Co. Duhme & Co. Durand & Carter Durand & Co. E. & J. Droz E. Imhauser Co. E. Tracy E.A. Jeanneret E.A. Muckle Edward Perret Elegant Watch Case Co. Elgin Giant Watch Case Co. Elgin Watch Case Co. Elless Watch Case Co. Emerson Watch Case Co. Erie Watch Case Co. Essex Watch Case Co. Fahys Watch Case Co. Fellows & Co. Fidelity Watch Case Co. Fitzgerald & Smith Fontenbach Bros. Francis Dubois Frank Doll G. Gigon George Courvoisier George L. Wait George W. Ladd Gigon & Co. Gigon & Co. (Alfred Humbert) Gigon & Seydel Globe Watch Case Co. Goldsmiths Company of Canada, Ltd. Gruen National Watch Case Co. H. & J.F. Pitkin H. Gerlack H. Muhr & Sons H. Tissot & Co. H.A. Wadsworth & Co. H.W. Johns Manville Co. Hagstoz & Thorpe Harbor Watch Case Co., Inc. Harper & Co. Harper & McClelland & Gill Harper & McLean Haydon W. Wheeler & Co. Henry Blank & Co. Henry E. Droz Henry Freund & Bro. Henry Goll & Co. Henry May Howard Watch Case Co. Hubbard G. Gill I. Ollendorf Co. I.D. Watch Case Co. Illinois Watch Case Co. Imperial Jewelery Co. Ira Goddard Isaac Swope & Co. J. Boss J. Laurent J. Laurent & Co J. Muhr & Bro. J.A. Brown & Co. J.A. Simpson & Bro. J.B. Rosenblatt J.F. Courvoisier J.H. Flyer J.M. Harper J.P. Durfey Shiebler Co. J.R. Wood & Sons Jackay Jewelers, Inc. Jacob Macher Jacot & Courvoisier Jacot, Courvoisier & Co. James M. Durand James R. Bartlett Jeanneret & Co. Jeannot & Co. Jeannot & Shiebler Watch Case Co. John Henry John L. Ward John S. Warner John Sherwood John T. Mauran Mfg. Co. John W. Sherwood John Wanamaker Joseph A. Feiner Joseph Blitz Joseph Daving Joseph H. Bauer Joseph H. H. Penton Joseph Schulman Juergens & Anderson Julius & Guinand Favre Julius Favre Julius Racine Kasper & Esh, Inc. Katz & Ogush, Inc. Keller & Untermeyer Mfg. Co. Keller, Ettinger & Fink Kenosha Watch Case Co. Keystone Watch Case Co. Knickerbocker Watch Co. L. Lewitt & Co. Inc. Lachet, Louis Ladd Watch Case Co. Langdon Lapwell Watch Case Co. Leichty & Chabot Leichty & Co. Leichty & Deschamps Leichty & Le Bouba Lenox Watch Case Co. Leon Hirsch Leonard Krowler & Son, Inc. Liberty Watch Case Co. Lissauer & Co. Louis Eugene Glatz Louis Gratz Louis Mathey Low & Courvoisier Lungren & Bell Luther Goddard M.W. Savage Manhattan Watch Co. Manheimer Watch Co. Margot Bros. Martin Metzger Martins & Tissot Master Watch Case Co. Mathey Bros. Max Freund Max Klaas Corp. May Pinnel & Co. Mayclese Metropolitan Watch Case Co. Metzger, Stein & Co. Michael H. Cronin Montgomery Safety Dial Co. Montreal Watch Case Co. Morris S. Rosenburg Muckle & Zesinger National Watch Case Co. New England Watch Case & Jewelry Co. New York Gold Watch Case Co. New York Watch Case Co. Newark Watch Case Co. North American Watch Case Co. Northwestern Watch Case Co. O'hara Waltham Dial Co., Inc. Oliver & Davis Otto Fessler & Co. Owen & Proud P.A. Jeanneret & Co. P.W. Ellis & Co. Ltd. Patek, Philippe & Co. Paul, Simon & Phillip Peerless Watch Case Co., Inc. Pennsylvania Watch Case Co., Inc. Penton, Ludlam & Underhill Pequignet Gigon & Bro. Pequignot & Bro. Perrin Watch Case Co. Peter Henry Peters & Boss Pforzheimer, Keller & Co. Philadelphia Watch Case Co. Pinneli, May & Co. Pioneer Watch Case Co. Piquet Bros. Progress Watch Case Co. Providence Watch Case Co. Queen City Watch Case Co. R. S. Peters & Bro. R.R. Fogel & Co. Randolph Peters & Co. Rays Watch Case Co. Reese S. Peters Rex Watch Case Co. Richard Oliver & Bloomfield Robbins & Appleton Rockford Watch Case Co. Rogers Rogers, Langdon & Went Rolex Watch Co. Roseman & Levy Rosenzweig Bros. Roseville Watch Case Co. Roy Watch Case Co. S. & D. Jewelery Mfg. Co., Inc. S. Anderson S. Bruner S.F. Myers Co. S.H.H. Penton Sag Harbor Watch Case Co. Schwab & Wuischpard Schwitter & Renaud Serex & Desmaison Serex & Maitre Bros Serex & Robert Shellcross Sipe & Sigler Sluka Bros. Smith & North Solidarity Watch Case Co. South Bend Watch Co. Spiro Watch Case Co., Inc. Standard Watch Case Co. Star Watch Case Co. Strauss & Neugass, Inc. Susstrong, Albert T. Zurbrugg & Co. Taylor & Baldwin The Canadian Watch Case Co. The Juldar Co. The Muhr Watch Case Co. Theophilus Zurbrugg Thiery & Serex Thiery Watch Case Co. Thomas C. Garrett Tracy & Baker Case Co. Tracy & Co. Tracy & Hulse Tracy & Shellcross Tracy & Ward Ulysse Savoye Union Watch Case Co. Unknown Case Manufacturer Van Trump & Silver Victor Nivois W.F. Doll Mfg. Co. W.H. Fitzgerald W.J. Gardiner Watch Case Co. Ltd. W.T. Thompson Wachter Mfg. Co. Wadsworth Watch Case Co. Wait & Crocker Ward & Co. Ward & Jennings Warner & Keating Warren & Spadone Wendell & Co. Western Watch Case Co. Wheeler & Parsons Willemin Watch Case Co. William & Co. Warner William A. Guinand William Konovitz William McNeir William Vulcan & Co. William Warner Wilmart, Moffat Curtis & Tracy Wm. I. Rosenfeld Young & Co. Z. & G. Gigon

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Northwestern Watch Case Co.

Location: Rockford, Illinois

Years of Operation: 1875-1883

Became Rockford Watch Case Co.

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