Pocket Watch Database

From the American Horology Archive:
Illinois Grade 510 Pocket Watch

Illinois Watch Co.

Grade: 510

Diamond, Ruby & Saphire Jewels.

Private Label(s) in Run:

M F & Co., Ariston Rated

What is a Private Label?
Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 2903121
Grade: 510
Model: 4
Estimated Production Year: 1916
Run Quantity: 10
Grade/Model Run: 2 of 4
Grade/Model Total Production: 170
Size: 12s
Jewels: 23j
Jewel Material: Ruby
Jewel Setting: Raised Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Inlay Color: Gilt
Movement Setting: Pendant
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
Barrel: Going
Train Material: Gold
Center Wheel Material: Gold
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Ruby
Adjusted: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: No
Dial Feet Locations: 20.5, 39.0, 55.0
Case Screw Locations: 17.5, 50.5
Case: Various
Run ID: 9266.510G8.12S910.124M81.O4452.P2501.23J175
Database Version: v52.262
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
0.51
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.63
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.003%

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Verification Reports for this Run

The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.


JerryT Waltham Expert Small Watch Expert 425 · January 8, 2017

Serial Number 2903129 was reported as inaccurate.

Note: This is a grade 510 and is a 12x14 size movement.
This movement is marked MF&Co, Ariston Rated.
Changes since this report was submitted:
Grade changed from 590 to 510
Illinois Grade 510 Pocket Watch