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From the American Horology Archive:
Columbus Watch Co.

Grade: 21

Private Label(s) in Run:
  • H.M. Lewis Pioneer - San Francisco, Cal.

What is a Private Label?
Manufacturer: Columbus Watch Co. ?
Manufacturer Location: Columbus, Ohio ?
Movement Serial Number: 43008 ?
Grade: 21 ?
Model: 2 ?
Estimated Production Year: 1885 ?
Size: 18s ?
Jewels: 11j ?
Jewel Setting: Pressed/Friction Settings ?
Movement Configuration: Hunting ?
Movement Finish: Gilt ?
Movement Setting: Lever ?
Plate: Full Plate ?
Regulator: Plain ?
Hairspring: Flat ?
Standard Dial Type: Single-Sunk ?
Adjusted: No ?
Railroad Grade: No ?
Movement Markings: H.M. Lewis Pioneer 655 Clay St. San Francisco, Cal. Safety Pinion ?
Case: Various ?
Database Version: v52.978 ?
Registry Population: Scoped for This Run Only: 4 (0.80%) ?