Pocket Watch Database

From the American Horology Archive:
Illinois Grade 100 Pocket Watch

Illinois Watch Co.

Grade: 100

Grade 100/105 Hybrid

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 301816 Question Mark
Grade: 100 Question Mark
Variation: 100+ Question Mark
Model: 3 Question Mark
Estimated Production Date: February 1889 - September 1889 Question Mark
Run Quantity: 100 Question Mark
Grade/Model Run: 3 of 6 Question Mark
Grade/Model Total Production: 800 Question Mark
Size: 18s Question Mark
Jewels: 16j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Full Plate Question Mark
Barrel: Going Question Mark
Train: Coarse Question Mark
Adjusted: Yes Question Mark
Adjusted to Temperature: Yes Question Mark
Railroad Grade: No Question Mark
Dial Feet Locations: 1.5, 21.5, 38.0 Question Mark
Case Screw Locations: 23.5, 51.5 Question Mark
Case: Various Question Mark
Run ID: 783.100G11.18S758.183M206.O207.L500.16J10 Question Mark
Database Version: v52.516 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
2.41 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
8.03 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.014% Question Mark
Registry Population:
Scoped for This Run Only
1 (1.00%) Question Mark
Research Note: Factory Records Indicate Private Labels in Run. #301816: Verified as Grade 100/105 Hybrid.

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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.


Robbybob1 7 · July 7, 2022

Serial Number 301816 was reported as inaccurate.

Note: Looking at the other Model 100 examples, the
damascening pattern is
Different on this watch and is the same as Model
105 watches. It also features a jeweled fifth
pinion, which is not shown in any of the other
Model 100 examples. I believe that this watch is
a Model 100/105 Hybrid, hence the designation
100-S for special example. I have not seen any
other examples of this type.
Curator Response: Thanks for the report. The "-S" is typically a desigantion for special-order private labels. Your watch is more consistent with the Grade 105 designation. There have been Grade 100 and Grade 105 movements recorded in this run. I have also added your serial number to the research notes for the run.

Robbybob1 7 · January 4, 2020

Serial Number 301816 was reported as inaccurate.

Note: I believe this to be a 100-S, which has the 105
style damasceening and a Chalmers Regulator.
Possibly with 17J (jeweled Fifth Pinion)
Curator Response: Thanks for the report. Is it a private label? The "100-S" designation would indicate a private label ("special" order).
Illinois Grade 100 Pocket Watch