Pocket Watch Database

From the American Horology Archive:
Illinois Grade 273 Pocket Watch

Illinois Watch Co.

Grade: 273

Custom Train Bridge

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 1748949
Grade: 273
Model: 2
Estimated Production Year: 1908
Run Quantity: 100
Grade/Model Run: 1 of 71
Grade/Model Total Production: 9,105
Size: 12s
Jewels: 17j
Movement Configuration: Hunting
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: Custom
Barrel: Going
Adjusted: Yes
Adjusted to Temperature: No
Railroad Grade: No
Dial Feet Locations: 20.5, 39.0, 55.0
Case Screw Locations: 17.5, 50.5
Case: Various
Run ID: 5151.273G1.12S5.122M2.H2680.L4286.17J1129
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
25.76
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
87.35
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.151%
Registry Population: 1 (1.00%)
Research Note: Factory records designate this run as Grade 22. However, observations in this run are more consistent with the Grade 273 classification. If true, this run represents the beginning of the Grade 273 production, so the "22" may have been a temporary classification in factory records while the grade was being established.

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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.


Radiotron Supporter 48 · April 20, 2020

Serial Number 1748949 was reported as inaccurate.

Note: Mine is a Senate. I thought it was 1904 grade 273.
It is pendant set.
Curator Response: Thanks for the report and images. I agree with your assessment. The movement is more consistent with the Grade 273 classification. The database has been updated and noted accordingly.
Changes since this report was submitted:
Grade changed from 22 to 273
Plate changed from 3/4 to Bridge
Illinois Grade 273 Pocket Watch