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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/55981
Access Date: March 11, 2025
From the American Horology Archive:
Illinois Grade Miller Pocket Watch
Illinois Watch Co.

Grade: Miller

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 55981 Question Mark
Grade: Miller Question Mark
Model: 1 Question Mark
Class: 3 Question Mark
Estimated Production Date: March 1880 - April 1880 Question Mark
Run Quantity: 300 Question Mark
Grade/Model Run: 13 of 18 Question Mark
Grade/Model Total Production: 12,200 Question Mark
Variant Est. Production: 7,600 (18S-M1-15J-AGK-AT) Question Mark
Size: 18s Question Mark
Jewels: 15j Question Mark
Jewel Setting: Scribed 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: Expansion Question Mark
Train: Coarse Question Mark
Regulator: Plain Question Mark
Hairspring: Flat Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Temperature: Yes Question Mark
Railroad Grade: Yes Question Mark
Railroad Grade Classification: Class C 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: Miller
Springfield, Ill.
Patent Pinion
[Some Marked "Adjusted"]
Case: Various Question Mark
Run ID: 107.G18.18S107.181M72.A72.K72.15J32 Question Mark
Database Version: v52.622 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 36.73 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 123.88 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.215% Question Mark
Registry Population:
Scoped for This Run Only		2 (0.67%) Question Mark
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Production Metrics Tree: Grade Miller

Target Profile: 18S-M1-15J-AGK-AT

Illinois Grade Miller (All Variations): 21,300 ETP
18S: 21,300 100.00%
18s, Grade Miller
18S-M1: 12,200 57.28%
18s, Grade Miller, Model 1		 Other: 9,100
Other Models or Unclassified
18S-M1-15J: 12,200 57.28%
18s, Grade Miller, Model 1, 15 Jewels
18S-M1-15J-AGK: 12,200 57.28%
18s, Grade Miller, Model 1, 15 Jewels, Adaptable/Key/Gilt
18S-M1-15J-AGK-AT: 7,600 35.68% Other: 4,600
Other Adjustments or Unclassified

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 2 watches in the population registry for this run with 1 image.
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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 · January 10, 2021

Serial Number 55785 was reported as accurate.

Anonymous · July 26, 2018

Serial Number 55809 was reported as accurate.

mdeshaies 40 · July 20, 2018

Serial Number 55809 was reported as accurate.

Anonymous · April 4, 2013

Serial Number 55972 was reported as accurate.

Anonymous · April 25, 2012

Serial Number 55906 was reported as inaccurate.

Note: additional info; movement is key wind/key set gilt
finish and adjusted
Changes since this report was submitted:
Movement Finish changed from Unknown to Gilt
Adjusted changed from Unknown to Yes
Railroad Grade changed from Unknown to Yes

Anonymous · April 17, 2012

Serial Number 55906 was reported as accurate.

Illinois Grade Miller Pocket Watch