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From the American Horology Archive:
Illinois Watch Co.

Grade: 65

Introduced in November 1891

Private Label(s) in Run:
  • Wilson Bros.
  • C A Schlechter Special Railroader - Reading, PA,
  • Wilson Brothers King of the Road, Boston, Mass.

What is a Private Label?
Manufacturer: Illinois ?
Manufacturer Location: Springfield, Illinois ?
Movement Serial Number: 1240613 ?
Grade: 65 ?
Model: 5 ?
Class: 3 ?
Estimated Production Year: 1894 ?
Run Quantity: 100 ?
Grade/Model Run: 22 of 26 ?
Grade/Model Total Production: 2,390 ?
Variant Est. Production: 200 (18S-M5-16J-N) ?
Size: 18s ?
Jewels: 16j ?
Jewel Setting: Screw-Set ?
Movement Configuration: Hunting ?
Movement Finish: Nickel ?
Movement Setting: Lever ?
Plate: Full Plate ?
Barrel: Going ?
Train: Fast ?
Regulator: Patent ?
Hairspring: Breguet ?
Standard Dial Type: Double-Sunk ?
Adjusted: Yes ?
Adjusted to Position: Yes ?
Adjusted to Temperature: Yes ?
Adjusted to Isochronism: Yes ?
Railroad Grade: Yes ?
Dial Feet Locations: 16.5, 36.5, 53.0 ?
Case Screw Locations: 23.5, 51.5 ?
Case: Various ?
Run ID: 2676.65G90.18S2058.185M19.H1375.L1843.16J68 ?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 3 (3.00%) ?