Pocket Watch Database

From the American Horology Archive:
Illinois Grade 509 Pocket Watch

Illinois Watch Co.

Grade: 509

Diamond, Ruby & Saphire Jewels

Private Label(s) in Run:

Ariston U.S.A.

What is a Private Label?
Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 2386711
Grade: 509
Model: 4
Estimated Production Year: 1911
Run Quantity: 30
Grade/Model Run: 1 of 6
Grade/Model Total Production: 570
Size: 12s
Jewels: 21j
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Pendant
Plate: Bridge Plate
Bridge Type: Center
Barrel: Going
Adjusted: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Railroad Grade: No
Dial Feet Locations: 20.5, 39.0, 55.0
Case Screw Locations: 17.5, 50.5
Movement Markings: Ariston
U.S.A.
Adjusted
5
Positions
21
Ruby Jewels
Double Roller
Case: Various
Run ID: 7461.509G1.12S472.124M2.O3245.P1287.21J479
Database Version: v52.270
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
1.71
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
5.69
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.010%
Registry Population: 1 (3.33%)

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Illinois Grade 509 Pocket Watch