Pocket Watch Database

From the American Horology Archive:
Illinois Grade 140 Pocket Watch

Illinois Watch Co.

Grade: 140

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 779751
Grade: 140
Model: 1
Class: 7
Estimated Production Year: 1887
Run Quantity: 2,800
Total Production: 67,350
Size: 6s
Jewels: 7j
Movement Configuration: Hunting
Movement Finish: Gilt
Movement Setting: Lever
Plate: 3/4 Plate
Barrel: Going
Balance Type: Expansion
Regulator: Plain
Hairspring: Flat
Standard Dial Type: Single-Sunk
Adjusted: No
Railroad Grade: No
Dial Feet Locations: 7.5, 40.0, 58.0
Case Screw Locations: 19.5, 49.5
Movement Markings: Illinois Watch Co.
Springfield
Safety Pinion
Case: Various
Registry Population: 11 (0.39%)
Database Version: v49.391

Production Metrics Tree: Grade 140

Target Profile: 6S-M1-7J-HGL-U

Illinois Grade 140 (All Variations): 67,350 ETP
6S: 67,350 100.00%
6s, Grade 140
6S-M1: 67,350 100.00%
6s, Grade 140, Model 1
6S-M1-7J: 67,350 100.00%
6s, Grade 140, Model 1, 7 Jewels
6S-M1-7J-HGL: 67,350 100.00%
6s, Grade 140, Model 1, 7 Jewels, Hunting/Lever/Gilt
6S-M1-7J-HGL-U: 67,350 100.00%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 779248 #248 Marketplace July 21, 2022
2 779276 #276 Marketplace March 08, 2016
3 779387 #387 Marketplace July 05, 2015
4 779690 #690 Marketplace February 05, 2020
5 779751 #751 Collection November 24, 2022
6 780507 #1507 Marketplace April 29, 2015
7 780811 #1811 Marketplace June 17, 2017
8 781155 #2155 Inferred
9 781322 #2322 Collection April 18, 2014
10 781471 #2471 Marketplace December 04, 2012
11 781735 #2735 Marketplace June 30, 2018
Standard Deviation of Known Examples: 952.44 (Expected: 808.43, Δ144.01/5.14%)

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Data Verification Reports

779001
Verification Serial Map
781800

Anonymous · November 20, 2020

Serial Number 781546 was reported as accurate.

Rcardkidz 2743 · May 25, 2020

Serial Number 781159 was reported as accurate.

Anonymous · April 3, 2020

Serial Number 779887 was reported as accurate.

Anonymous · October 18, 2019

Serial Number 781751 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · October 15, 2017

Serial Number 781668 was reported as accurate.

Anonymous · September 20, 2017

Serial Number 780246 was reported as accurate.

Anonymous · May 9, 2014

Serial Number 781456 was reported as accurate.

Anonymous · March 20, 2014

Serial Number 781211 was reported as accurate.

firefighter 1 · August 13, 2013

Serial Number 779787 was reported as accurate.

Illinois Grade 140 Pocket Watch