Pocket Watch Database

From the American Horology Archive:
Illinois Grade 510 Pocket Watch

Illinois Watch Co.

Grade: 510

Diamond, Ruby & Saphire Jewels.

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 2905450
Grade: 510
Model: 4
Estimated Production Year: 1916
Run Quantity: 90
Grade/Model Run: 3 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: 6
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: 9273.510G9.12S916.124M84.O4453.P2517.23J171
Database Version: v52.219
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%
Registry Population: 3 (3.33%)

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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.


rmwatchandclock Supporter 365 · September 1, 2020

Serial Number 2905487 was reported as accurate.

Anonymous · January 13, 2020

Serial Number 2905465 was reported as accurate.

Anonymous · January 1, 2016

Serial Number 2905419 was reported as accurate.

Msw233 Supporter 89 · August 18, 2013

Serial Number 2905419 was reported as accurate.

Anonymous · June 3, 2012

Serial Number 2905485 was reported as inaccurate.

Note: adjusted to six (6) positions
Changes since this report was submitted:
Adjusted # Positions changed from 5 to 6
Double Roller changed from Unknown to Yes

Anonymous · June 3, 2012

Serial Number 2905485 was reported as accurate.

Changes since this report was submitted:
Adjusted # Positions changed from 5 to 6
Illinois Grade 510 Pocket Watch