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: 200576
Grade: 101
Model: 1
Class: 5
Estimated Production Date: March 1879 - May 1879
Run Quantity: 800
Grade/Model Run: 1 of 26
Grade/Model Total Production: 30,620
Size: 18s
Jewels: 11j
Jewel Setting: Burnished Jewels
Movement Configuration: Adaptable
Movement Finish: Nickel
Movement Setting: Key
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: O-36.5, H-51.5
Case: Various
Run ID: 550.101G6.18S527.181M231.A231.K238.11J277
Database Version: v52.245
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
92.19
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
311.08
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.539%
Registry Population: 12 (1.50%)
Research Note: #200576: Observed with Special Gilded Finish.

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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.


cjbrem Supporter 521 · December 3, 2023

Serial Number 201111 was reported as accurate.

Anonymous · June 4, 2020

Serial Number 201164 was reported as accurate.

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

Anonymous · October 10, 2019

Serial Number 200712 was reported as inaccurate.

Note: Hi. I think any pocketwatch with serial number
210000 or before is an 1878. Any serial number
after that is an 1879. According to Illinois watch
co. history serial number chart. Thank you, Bruce.
Curator Response: Estimated production dates are based on serial number extrapolation and are generally accurate within +/- 3 years. All serial number lookups are based on this method and are estimations.
Changes since this report was submitted:
Adjusted changed from Yes to No

Anonymous · October 10, 2019

Serial Number 200712 was reported as accurate.

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

Anonymous · August 21, 2018

Serial Number 200543 was reported as accurate.

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