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From the American Horology Archive:
Illinois Watch Co.

Grade: Bunn Special

Mixed Run: 161 Type I, Type II, Type IIE

Manufacturer: Illinois ?
Manufacturer Location: Springfield, Illinois ?
Movement Serial Number: 5284578 ?
Grade: Bunn Special ?
Variation: 161 Type II ?
Model: 14 ?
Estimated Production Year: 1929 ?
Run Quantity: 900 ?
Grade/Model Run: 131 of 132 ?
Grade/Model Total Production: 116,300 ?
Variant Est. Production: 103,700 (16S-M14-21J) ?
Size: 16s ?
Jewels: 21j ?
Jewel Material: Ruby ?
Jewel Setting: Raised Gold Settings (Screw-Set) ?
Movement Configuration: Openface ?
Movement Finish: Nickel ?
Finish Pattern: Ray ?
Movement Setting: Lever ?
Plate: 3/4 Plate ?
Double Roller: Yes ?
Barrel: ["Going","Jewelledmotor","60Hrmo ?
Regulator: Reed ?
Hairspring: Breguet ?
Adjusted: Yes ?
Adjusted to Position: Yes ?
Adjusted # of Positions: 6 ?
Adjusted to Temperature: Yes ?
Adjusted to Isochronism: Yes ?
Railroad Grade: Yes ?
Dial Feet Locations: 17.5, 39.0, 58.0 ?
Case Screw Locations: 3.0, 38.0 ?
Movement Markings: Bunn Special Illinois Watch Springfield 21 Jewels Motor Barrel Sixty Hour 161 Adjusted Temp. And Six Positions Double Roller ?
Case: Various ?
Run ID: 12542.G687.16S4071.1614M135.O7184.L7145.21J1518 ?
Database Version: v52.978 ?
Advanced Metrics
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Registry Population: Scoped for This Run Only: 37 (4.11%) ?
$ Estimated Value (12 Month Change): -7.30% Analyzing 6,630 Sales ?
Research Note: Mixed with 161 Type IIE (Elinvar) Model 15