Pocket Watch Database

From the American Horology Archive:
Illinois Grade 102 Pocket Watch

Illinois Watch Co.

Grade: 102

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 506481
Grade: 102
Model: 2
Estimated Production Date: February 1883 - October 1884
Run Quantity: 700
Grade/Model Total Production: 800
Size: 18s
Jewels: 13j
Jewel Setting: Screw-Set
Movement Configuration: Hunting
Movement Finish: Nickel
Movement Setting: Lever
Plate: Full Plate
Barrel: Going
Balance Type: Expansion
Train: Coarse
Adjusted: Yes
Adjusted to Temperature: Yes
Railroad Grade: No
Dial Feet Locations: 16.5, 36.5, 53.0
Case Screw Locations: 23.5, 51.5
Case: Various
Registry Population: 6 (0.86%)
Database Version: v49.701

Production Metrics Tree: Grade 102

Target Profile: 18S-M2-13J-HNL-AT

Illinois Grade 102 (All Variations): 1,600 ETP
18S: 1,600 100.00%
18s, Grade 102
18S-M2: 800 50.00%
18s, Grade 102, Model 2
Other: 800
Other Models or Unclassified
18S-M2-13J: 800 50.00%
18s, Grade 102, Model 2, 13 Jewels
18S-M2-13J-HNL: 800 50.00%
18s, Grade 102, Model 2, 13 Jewels, Hunting/Lever/Nickel
18S-M2-13J-HNL-AT: 800 50.00%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 506002 #2 Marketplace July 17, 2021
2 506052 #52 Marketplace April 22, 2017
3 506305 #305 Marketplace September 23, 2018
4 506433 #433 Marketplace September 01, 2018
5
Image Credit: Kosborne
506481 #481 Collection March 05, 2021
6 506672 #672 Marketplace August 14, 2019
Standard Deviation of Known Examples: 259.10 (Expected: 202.22, Δ56.88/8.13%)

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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 · June 29, 2015

Serial Number 506052 was reported as accurate.

Anonymous · February 25, 2015

Serial Number 506457 was reported as accurate.

Illinois Grade 102 Pocket Watch