Pocket Watch Database

From the American Horology Archive:
Illinois Grade 187 Pocket Watch

Illinois Watch Co.

Grade: 187

Ruby Jewels

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 2430397 Question Mark
Grade: 187 Question Mark
Model: 5 Question Mark
Estimated Production Year: 1912 Question Mark
Run Quantity: 350 Question Mark
Grade/Model Run: 15 of 16 Question Mark
Grade/Model Total Production: 3,750 Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Ruby Question Mark
Jewel Setting: Screw-Set Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Signing Style: Serif (Decorative) Question Mark
Movement Inlay Color: Black Question Mark
Movement Setting: Lever Question Mark
Plate: 3/4 Bridge Plate Question Mark
Bridge Type: 3-Finger Question Mark
Double Roller: Yes Question Mark
Barrel: Going Question Mark
Center Wheel Material: Gold Question Mark
Regulator: Micrometer Question Mark
Adjusted: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Dial Feet Locations: 24.5, 36.5, 55.5 Question Mark
Case Screw Locations: 3.5, 37.5 Question Mark
Movement Markings: Illinois Watch Co.
Springfield
187
17 Ruby Jewels
Adjusted
Temperature
5 Positions
Isochronism
Double Roller
Case: Various Question Mark
Run ID: 7625.187G28.16S2080.165M830.O3343.L5691.17J2165 Question Mark
Database Version: v52.428 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
11.29 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
38.01 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.066% Question Mark
Registry Population:
Scoped for This Run Only
6 (1.71%) Question Mark

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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.


Anonymous · June 23, 2024

Serial Number 2430211 was reported as accurate.

BobNeue Backcharger 16 · March 21, 2022

Serial Number 2430473 was reported as accurate.

texnet 684 · December 26, 2021

Serial Number 2430257 was reported as accurate.

Anonymous · July 24, 2021

Serial Number 2430501 was reported as accurate.

Anonymous · July 11, 2019

Serial Number 2430204 was reported as accurate.

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

inlinehunter006 20 · December 15, 2018

Serial Number 2430396 was reported as accurate.

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

inlinehunter006 20 · November 9, 2018

Serial Number 2430396 was reported as accurate.

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

Anonymous · May 2, 2018

Serial Number 2430396 was reported as accurate.

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

Gimparoo Supporter 703 · February 15, 2018

Serial Number 2430397 was reported as accurate.

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

jacobwalls07 143 · May 18, 2017

Serial Number 2430347 was reported as accurate.

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