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Aurora
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Columbus
Elgin
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Hamilton
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E. Howard Watch Co. (Keystone)
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E. Howard & Co.
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Illinois
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Lancaster
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Manistee
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Marion
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U.S. Watch Co.
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New York Standard
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Rockford
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Seth Thomas
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Pocket Watch Database

Unknown (J.P.C.)

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Ephemera

Unknown (J.P.C.)

Initial Marking: J.P.C.

Years of Operation: -

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