Pocket Watch Database

From the American Horology Archive:
Illinois Grade 101 Pocket Watch

Illinois Watch Co.

Grade: 101

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 221041
Grade: 101
Model: 2
Class: 5
Estimated Production Date: August 1880
Run Quantity: 500
Grade/Model Total Production: 38,400
Variant Est. Production: 38,100 (18S-M2-11J)
Size: 18s
Jewels: 11j
Jewel Setting: Burnished Jewels
Movement Configuration: Hunting
Movement Finish: Nickel
Movement Setting: Lever
Plate: Full Plate
Barrel: Going
Balance Type: Expansion
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: 23.5, 51.5
Case: Various
Registry Population: 4 (0.80%)
Database Version: v49.701

Production Metrics Tree: Grade 101

Target Profile: 18S-M2-11J-HNL-U

Illinois Grade 101 (All Variations): 87,950 ETP
18S: 87,950 100.00%
18s, Grade 101
18S-M2: 38,400 43.66%
18s, Grade 101, Model 2
Other: 49,550
Other Models or Unclassified
18S-M2-11J: 38,100 43.32%
18s, Grade 101, Model 2, 11 Jewels
Other: 300
Other Jewels or Unclassified
18S-M2-11J-HNL: 38,100 43.32%
18s, Grade 101, Model 2, 11 Jewels, Hunting/Lever/Nickel
18S-M2-11J-HNL-U: 38,100 43.32%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 220954 #254 Inferred
2 221000 #300 Marketplace July 13, 2015
3
Image Credit: WHinder
221041 #341 Collection July 12, 2015
4 221114 #414 Marketplace December 29, 2018
Standard Deviation of Known Examples: 67.88 (Expected: 144.48, Δ76.60/15.32%)

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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 · July 27, 2015

Serial Number 221000 was reported as accurate.

Changes since this report was submitted:
Adjusted changed from Yes to No

chevykingpower 215 · May 1, 2014

Serial Number 221000 was reported as accurate.

Changes since this report was submitted:
Adjusted changed from Yes to No
Illinois Grade 101 Pocket Watch