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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/1548586
Access Date: April 26, 2024
From the American Horology Archive:
Illinois Grade 187 Pocket Watch
Illinois Watch Co.

Grade: 187

Ruby Jewels

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 1548586
Grade: 187
Model: 5
Estimated Production Year: 1900
Run Quantity: 400
Grade/Model Run: 7 of 16
Grade/Model Total Production: 3,750
Size: 16s
Jewels: 17j
Jewel Material: Ruby
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Mixed
Movement Setting: Lever
Plate: 3/4 Bridge Plate
Bridge Type: 3-Finger
Barrel: Going
Adjusted: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Railroad Grade: Yes
Dial Feet Locations: 24.5, 36.5, 55.5
Case Screw Locations: 3.5, 37.5
Case: Various
Run ID: 4264.187G15.16S856.165M253.O1482.L3400.17J793
Database Version: v52.245
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 11.29
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 38.01
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.066%
Registry Population: 6 (1.50%)
Research Note: This run contains movements with mixed finish patterns. #1548653: Verified as two-tone with gold circle center. #1548880: Verified with nickel "sunburst" damaskeening pattern.
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Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 6 watches in the population registry for this run with 2 images.
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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.

TerryfromCanada Supporter 481 · June 3, 2023

Serial Number 1548653 was reported as inaccurate.

Note: Hi, The finish on my watch's movement is two tone,
nickel with a gold centre.
Curator Response: Thanks for the report. This information has been noted in the research notes for this run.

Anonymous · May 9, 2021

Serial Number 1548870 was reported as accurate.

Anonymous · January 29, 2021

Serial Number 1548856 was reported as accurate.

Changes since this report was submitted:
Plate changed from Bridge to 3/4 Bridge

Anonymous · January 13, 2018

Serial Number 1548702 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to 3/4 Bridge
Illinois Grade 187 Pocket Watch