Pocket Watch Database

From the American Horology Archive:
Illinois Grade 101 Pocket Watch

Illinois Watch Co.

Grade: 101

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 201111 Question Mark
Grade: 101 Question Mark
Model: 1 Question Mark
Class: 5 Question Mark
Estimated Production Date: March 1879 - May 1879 Question Mark
Run Quantity: 800 Question Mark
Grade/Model Run: 1 of 26 Question Mark
Grade/Model Total Production: 30,620 Question Mark
Size: 18s Question Mark
Jewels: 11j Question Mark
Jewel Setting: Burnished Jewels Question Mark
Movement Configuration: Adaptable Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Key Question Mark
Plate: Full Plate Question Mark
Barrel: Going Question Mark
Balance Type: Expansion Question Mark
Train: Coarse Question Mark
Regulator: Plain Question Mark
Hairspring: Flat Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Dial Feet Locations: 16.5, 36.5, 53.0 Question Mark
Case Screw Locations: O-36.5, H-51.5 Question Mark
Case: Various Question Mark
Run ID: 550.101G6.18S527.181M231.A231.K238.11J277 Question Mark
Database Version: v52.526 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
92.19 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
311.08 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.539% Question Mark
Registry Population:
Scoped for This Run Only
12 (1.50%) Question Mark
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 959 · 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