Pocket Watch Database

From the American Horology Archive:
Illinois Grade Columbia Pocket Watch

Illinois Watch Co.

Grade: Columbia

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 149662
Grade: Columbia
Model: 1
Estimated Production Date: September 1880 - October 1880
Run Quantity: 900
Grade/Model Total Production: 37,200
Variant Est. Production: 34,800 (18S-M1-11J-HGK)
Size: 18s
Jewels: 11j
Jewel Setting: Burnished Jewels
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Barrel: Going
Train: Coarse
Regulator: Plain
Hairspring: Flat
Standard Dial Type: Single-Sunk
Adjusted: No
Railroad Grade: No
Dial Feet Locations: 16.5, 36.5, 53.0
Case Screw Locations: O-36.5, H-51.5
Movement Markings: Columbia
Springfield, Ill.
Case: Various
Registry Population: 5 (0.56%)
Database Version: v49.708

Production Metrics Tree: Grade Columbia

Target Profile: 18S-M1-11J-HGK-U

Illinois Grade Columbia (All Variations): 65,300 ETP
18S: 65,300 100.00%
18s, Grade Columbia
18S-M1: 37,200 56.97%
18s, Grade Columbia, Model 1
Other: 28,100
Other Models or Unclassified
18S-M1-11J: 37,200 56.97%
18s, Grade Columbia, Model 1, 11 Jewels
18S-M1-11J-HGK: 34,800 53.29%
18s, Grade Columbia, Model 1, 11 Jewels, Adaptable/Key/Gilt
Other: 2,400
Other Configs or Unclassified
18S-M1-11J-HGK-U: 34,800 53.29%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 149118 #118 Collection December 26, 2018
2 149244 #244 Inferred
3 149260 #260 Marketplace June 16, 2022
Image Credit: pivotkiller
149662 #662 Collection January 13, 2015
5 149742 #742 Marketplace October 02, 2022
Standard Deviation of Known Examples: 277.91 (Expected: 259.95, Δ17.96/2.00%)

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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 · March 20, 2021

Serial Number 149792 was reported as accurate.

ngupaan 95 · June 14, 2019

Serial Number 149288 was reported as accurate.

Anonymous · December 26, 2018

Serial Number 149118 was reported as inaccurate.

Note: this movement is marked columbus time
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection so we can take a closer look.

Anonymous · March 10, 2013

Serial Number 149555 was reported as inaccurate.

No further details were submitted with the report.
Illinois Grade Columbia Pocket Watch