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From the American Horology Archive:
Rockford Watch Co.

Grade: 84

Pressed Upper Balance Jewel

Manufacturer: Rockford ?
Manufacturer Location: Rockford, Illinois ?
Movement Serial Number: 320149 ?
Grade: 84 ?
Model: 8 ?
Estimated Production Year: 1888 ?
Run Quantity: 1,000 ?
Grade/Model Run: 6 of 12 ?
Grade/Model Total Production: 6,900 ?
Size: 18s ?
Jewels: 15j ?
Jewel Setting: Screw-Set ?
Movement Configuration: Hunting ?
Movement Finish: Two-Tone ?
Movement Setting: Lever ?
Plate: Full Plate ?
Regulator: Type 5 ?
Hairspring: Breguet ?
Standard Dial Type: Double-Sunk ?
Adjusted: Yes ?
Movement Markings: R.W.Co. Rockford Ill. Adjusted ?
Case: Various ?
Run ID: 297.84G6.18S295.188M62.H144.L160.15J113 ?
Data Research: 1907 Rockford Serial List ?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 16 (1.60%) ?