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From the American Horology Archive:
Seth Thomas Watch Co.

Grade: 159

Private Label(s) in Run:
  • L.A. Orr Co. - Rochester, Minn.
  • L.A. Orr Co. - Rocmester, Minn.

What is a Private Label?
Manufacturer: Seth Thomas ?
Manufacturer Location: Thomaston, Connecticut ?
Movement Serial Number: 288254 ?
Grade: 159 ?
Model: 5 ?
Estimated Production Year: 1910 ?
Run Quantity: 100 ?
Grade/Model Run: 1 of 55 ?
Grade/Model Total Production: 11,250 ?
Variant Est. Production: 1,600 (18S-M5-L-T) ?
Size: 18s ?
Jewels: 15j ?
Jewel Setting: Screw-Set ?
Movement Configuration: Openface ?
Movement Finish: Two-Tone ?
Finish Pattern: Gold Circle ?
Movement Inlay Color: Black ?
Movement Setting: Lever ?
Plate: Full Plate ?
Regulator: Micrometric ?
Hairspring: Breguet ?
Standard Dial Type: Double-Pressed ?
Adjusted: No ?
Railroad Grade: No ?
Movement Markings: Seth Thomas Thomaston, Conn. Safety Pinion. 15 Jewels ?
Case: Various ?
Run ID: 605.159G42.18S532.185M287.O386.L532.15J177 ?
Data Research: 1904 Seth Thomas Serial List ?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 3 (3.00%) ?