Pocket Watch Database
https://pocketwatchdatabase.com/search/result/illinois/227550
Access Date: March 21, 2023
From the American Horology Archive:

Illinois Watch Co.
Grade: 101
5th Pinion.
Manufacturer: | Illinois | ![]() |
Manufacturer Location: | Springfield, Illinois | ![]() |
Movement Serial Number: | 227550 | ![]() |
Grade: | 101 | ![]() |
Model: | 3 | ![]() |
Class: | 5 | ![]() |
Estimated Production Date: | December 1880 | ![]() |
Run Quantity: | 200 | ![]() |
Grade/Model Total Production: | 18,830 | ![]() |
Variant Est. Production: | 18,730 (18S-M3-11J) | ![]() |
Size: | 18s | ![]() |
Jewels: | 11j | ![]() |
Jewel Setting: | Burnished Jewels | ![]() |
Movement Configuration: | Openface | ![]() |
Movement Finish: | Nickel | ![]() |
Movement Setting: | Lever | ![]() |
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: | 1.5, 21.5, 38.0 | ![]() |
Case Screw Locations: | 23.5, 51.5 | ![]() |
Case: | Various | ![]() |
Database Version: | v50.306 | ![]() |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 55.38 | ![]() |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 195.03 | ![]() |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.331% | ![]() |
Registry Population: | 2 (1.00%) | ![]() |
Production Metrics Tree: Grade 101
Target Profile: 18S-M3-11J-ONL-U
Illinois Grade 101 (All Variations): 87,950 ETP | |||
18S: 87,950 100.00% 18s, Grade 101 |
|||
18S-M3: 18,830 21.41% 18s, Grade 101, Model 3 |
Other: 69,120
Other Models or Unclassified |
||
18S-M3-11J: 18,730 21.30% 18s, Grade 101, Model 3, 11 Jewels |
Other: 100
Other Jewels or Unclassified |
||
18S-M3-11J-ONL: 18,730 21.30% 18s, Grade 101, Model 3, 11 Jewels, Openface/Lever/Nickel |
|||
18S-M3-11J-ONL-U: 18,730 21.30% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
1 | 227448 | #48 | Marketplace | March 11, 2018 | |
2 |
![]() Image Credit: davis731 |
227550 | #150 | Collection | February 27, 2022 |
Standard Deviation of Known Examples: 72.12 (Expected: 57.88, Δ14.25/7.12%) |
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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.

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This WatchFrom This Run
uploaded by davis731
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uploaded by Edging
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uploaded by cbzimm
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uploaded by mbellich
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uploaded by Fuchs2
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uploaded by colaman6mcq
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uploaded by cbzimm
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uploaded by Cincinnatus
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uploaded by lennyt11374
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uploaded by brycam00
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uploaded by esoxhunter
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uploaded by pocketwatch101