Pocket Watch Database

From the American Horology Archive:
Illinois Grade 99 Pocket Watch

Illinois Watch Co.

Grade: 99

Private Label(s) in Run:

Henry Birkenbusch - Pekin, Ill.

What is a Private Label?
Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 1056086 Question Mark
Grade: 99 Question Mark
Model: 4 Question Mark
Class: 5 Question Mark
Estimated Production Year: 1890 Question Mark
Run Quantity: 100 Question Mark
Grade/Model Run: 2 of 22 Question Mark
Grade/Model Total Production: 2,600 Question Mark
Size: 18s Question Mark
Jewels: 11j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Pendant Question Mark
Plate: Full Plate Question Mark
Barrel: Going Question Mark
Train: Coarse Question Mark
Regulator: Patent Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Dial Feet Locations: 2.0, 21.5, 38.5 Question Mark
Case Screw Locations: 23.0, 52.0 Question Mark
Case: Various Question Mark
Run ID: 1898.99G40.18S1526.184M30.O485.P63.11J900 Question Mark
Database Version: v52.526 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
7.83 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
26.32 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.046% Question Mark
Registry Population:
Scoped for This Run Only
1 (1.00%) Question Mark
Research Note: Factory Records Indicate Private Labels in Run.

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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.


wfoufo Supporter 21 · October 19, 2023

Serial Number 1056086 was reported as inaccurate.

Note: Private label for Henry Birkenbusch Pekin, ILL
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Illinois Grade 99 Pocket Watch