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From the American Horology Archive:
Rockford Watch Co.

Grade: 825

Screw-Set Upper Balance Jewel, Hairspring Stud Extension

Manufacturer: Rockford ?
Manufacturer Location: Rockford, Illinois ?
Movement Serial Number: 526589 ?
Grade: 825 ?
Model: 10 ?
Estimated Production Year: 1898 ?
Run Quantity: 800 ?
Grade/Model Run: 5 of 10 ?
Grade/Model Total Production: 4,610 ?
Variant Est. Production: 3,950 (18S-M10-T) ?
Size: 18s ?
Jewels: 17j ?
Jewel Setting: Screw-Set ?
Movement Configuration: Hunting ?
Movement Finish: Two-Tone ?
Movement Setting: Lever ?
Plate: Full Plate ?
Train: Quick ?
Regulator: Micrometric ?
Hairspring: Breguet ?
Standard Dial Type: Double-Sunk ?
Adjusted: Yes ?
Adjusted to Position: No ?
Adjusted to Temperature: Yes ?
Adjusted to Isochronism: Yes ?
Case: Various ?
Run ID: 629.825G5.18S562.1810M49.H346.L491.17J132 ?
Data Research: 1907 Rockford Serial List ?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 13 (1.63%) ?