Pocket Watch Database


From the American Horology Archive:
Illinois Grade Mason Pocket Watch

Illinois Watch Co.

Grade: Mason

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 28550 Question Mark
Grade: Mason Question Mark
Model: 1 Question Mark
Estimated Production Date: November 1874 Question Mark
Run Quantity: 1,000 Question Mark
Grade/Model Run: 9 of 16 Question Mark
Grade/Model Total Production: 10,300 Question Mark
Size: 18s Question Mark
Jewels: 7j Question Mark
Movement Configuration: Adaptable Question Mark
Movement Finish: Gilt Question Mark
Movement Setting: Key Question Mark
Plate: Full Plate Question Mark
Barrel: Going Question Mark
Balance Type: Uncut Expansion Question Mark
Train: Coarse Question Mark
Regulator: Plain Question Mark
Hairspring: Flat Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Dial Feet Locations: 16.5, 36.5, 53.0 Question Mark
Case Screw Locations: O-36.5, H-51.5 Question Mark
Movement Markings: Mason
Springfield, Ill.
Patent Pinion
Case: Various Question Mark
Run ID: 35.G9.18S35.181M35.A35.K35.7J9 Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
31.01 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
104.57 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.181% Question Mark
Registry Population:
Scoped for This Run Only
5 (0.50%) 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 · April 9, 2023

Serial Number 28770 was reported as accurate.

Dave895 Supporter 102 · December 14, 2022

Serial Number 28550 was reported as accurate.

Anonymous · March 22, 2021

Serial Number 28448 was reported as accurate.

Anonymous · March 9, 2021

Serial Number 28770 was reported as accurate.

Anonymous · September 23, 2020

Serial Number 28159 was reported as accurate.

Anonymous · August 9, 2020

Serial Number 28106 was reported as accurate.

Anonymous · May 20, 2020

Serial Number 28752 was reported as accurate.

Anonymous · November 20, 2019

Serial Number 28758 was reported as accurate.

Supersport 7 · March 8, 2019

Serial Number 28491 was reported as accurate.

brentel 19 · July 30, 2018

Serial Number 28890 was reported as accurate.

Anonymous · June 3, 2018

Serial Number 28890 was reported as accurate.

Anonymous · July 23, 2017

Serial Number 28289 was reported as accurate.

Anonymous · January 4, 2013

Serial Number 28693 was reported as accurate.

Illinois Grade Mason Pocket Watch