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From the American Horology Archive:
Illinois Watch Co.

Grade: 186

Getty Model

Manufacturer: Illinois ?
Manufacturer Location: Springfield, Illinois ?
Movement Serial Number: 2537920 ?
Grade: 186 ?
Model: 5 ?
Estimated Production Year: 1913 ?
Run Quantity: 300 ?
Grade/Model Run: 2 of 28 ?
Grade/Model Total Production: 4,470 ?
Variant Est. Production: 3,950 (16S-M5-17J-N) ?
Size: 16s ?
Jewels: 17j ?
Jewel Material: Ruby ?
Jewel Setting: Screw-Set ?
Movement Configuration: Openface ?
Movement Finish: Nickel ?
Movement Inlay Color: Gilt ?
Movement Setting: Lever ?
Plate: 3/4 Bridge Plate ?
Bridge Type: Train ?
Barrel: Going ?
Center Wheel Material: Gold ?
Regulator: Micrometric ?
Hairspring: Breguet ?
Standard Dial Type: Double-Sunk ?
Adjusted: Yes ?
Adjusted # of Positions: 4 ?
Adjusted to Temperature: Yes ?
Railroad Grade: Yes ?
Dial Feet Locations: 24.5, 36.5, 55.5 ?
Case Screw Locations: 3.5, 37.5 ?
Case: Various ?
Run ID: 8002.186G49.16S2226.165M867.O3600.L5831.17J2339 ?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 6 (2.00%) ?