Pocket Watch Database

From the American Horology Archive:

Illinois Watch Co.

Grade: Sangamo Special

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 4166227 Question Mark
Grade: Sangamo Special Question Mark
Variation: False Bridge Question Mark
Model: 10 Question Mark
Estimated Production Year: 1923 Question Mark
Run Quantity: 800 Question Mark
Grade/Model Run: 4 of 4 Question Mark
Grade/Model Total Production: 6,400 Question Mark
Size: 17s Question Mark
Jewels: 23j Question Mark
Jewel Material: Ruby Question Mark
Jewel Setting: Raised Gold Settings (Screw-Set) Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: False Center Question Mark
Double Roller: Yes Question Mark
Barrel: Jeweled Motor Question Mark
Train Material: Gold Question Mark
Center Wheel Material: Gold Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Ruby Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 6 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Movement Markings: Illinois Watch Co.
Springfield
Sangamo Special
23 Jewels
Motor Barrel
Adjusted
Temp. And
Six
Positions
D.R.
Case: Various Question Mark
Run ID: 11513.G41.17S4.1710M4.O6271.L6822.23J247 Question Mark
Database Version: v52.457 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
19.27 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
64.94 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.113% Question Mark
Registry Population:
Scoped for This Run Only
22 (2.75%) Question Mark
$ Estimated Value (12 Month Change): -4.72% Analyzing 145 Sales Question Mark
Research Note: #4166419: Single-Sunk Heavy Gothic Montgomery Dial
Some sources indicate this run is fitted with a 60-Hour barrel and mainspring. However, a timing test of #4166633 confirms this is not the case. Only the Model 13 was fitted with the 60-Hour mainspring.

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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.


Anonymous · October 3, 2024

Serial Number 4166585 was reported as accurate.

Anonymous · March 18, 2023

Serial Number 4166734 was reported as accurate.

dcooper Supporter 230 · January 19, 2023

Serial Number 4166234 was reported as accurate.

Anonymous · April 2, 2022

Serial Number 4166585 was reported as accurate.

rad291 Supporter 20 · August 28, 2021

Serial Number 4166227 was reported as accurate.

texnet 684 · August 8, 2021

Serial Number 4166585 was reported as accurate.

rad291 Supporter 20 · June 22, 2021

Serial Number 4166227 was reported as accurate.

Anonymous · May 28, 2021

Serial Number 4166198 was reported as accurate.

bunnofnickle 67 · July 4, 2020

Serial Number 4166211 was reported as accurate.

Anonymous · May 14, 2020

Serial Number 4166221 was reported as accurate.

Anonymous · July 24, 2019

Serial Number 4166667 was reported as inaccurate.

Note: Should be Model 13 according to #38, 2018 Price
Guide to Watches. Hope they are correct ! Keep up
the good work!
Curator Response: Thanks for the report. This particular run is Model 10. https://pocketwatchdatabase.com/guide/company/illinois/research/illinois-sangamo-special-production-figures

Anonymous · February 15, 2019

Serial Number 4166198 was reported as accurate.

dfchong 837 · February 2, 2019

Serial Number 4166218 was reported as accurate.

Anonymous · August 6, 2018

Serial Number 4166419 was reported as accurate.

dfchong 837 · March 27, 2018

Serial Number 4166463 was reported as accurate.

dfchong 837 · February 28, 2018

Serial Number 4166383 was reported as accurate.

Anonymous · November 5, 2017

Serial Number 4166351 was reported as accurate.

Anonymous · October 15, 2017

Serial Number 4166016 was reported as accurate.

dfchong 837 · September 18, 2017

Serial Number 4166390 was reported as accurate.

dfchong 837 · September 15, 2017

Serial Number 4166390 was reported as accurate.

Bmitch506 1 · September 7, 2017

Serial Number 4166485 was reported as accurate.

Anonymous · March 17, 2017

Serial Number 4166198 was reported as accurate.

Anonymous · March 16, 2017

Serial Number 4166218 was reported as accurate.

dfchong 837 · February 27, 2017

Serial Number 4166388 was reported as accurate.

Anonymous · February 16, 2017

Serial Number 4166196 was reported as accurate.

Anonymous · January 29, 2017

Serial Number 4166218 was reported as accurate.

Anonymous · January 29, 2017

Serial Number 4166218 was reported as accurate.

Anonymous · January 27, 2017

Serial Number 4166218 was reported as accurate.

Anonymous · January 27, 2017

Serial Number 4166218 was reported as accurate.

Anonymous · January 27, 2017

Serial Number 4166218 was reported as accurate.

Anonymous · January 27, 2017

Serial Number 4166218 was reported as accurate.

Anonymous · October 25, 2016

Serial Number 4166044 was reported as accurate.

Anonymous · October 25, 2016

Serial Number 4166044 was reported as accurate.

dfchong 837 · October 24, 2016

Serial Number 4166044 was reported as accurate.

dfchong 837 · October 24, 2016

Serial Number 4166044 was reported as accurate.

dfchong 837 · October 24, 2016

Serial Number 4166044 was reported as accurate.

Anonymous · September 22, 2016

Serial Number 4166196 was reported as accurate.

Anonymous · August 1, 2016

Serial Number 4166458 was reported as accurate.

Anonymous · June 5, 2016

Serial Number 4166051 was reported as accurate.

Anonymous · February 2, 2016

Serial Number 4166373 was reported as accurate.

Anonymous · December 30, 2015

Serial Number 4166592 was reported as accurate.

Anonymous · May 24, 2015

Serial Number 4166516 was reported as accurate.

Gasperoff Supporter 727 · April 26, 2015

Serial Number 4166174 was reported as accurate.

Gasperoff Supporter 727 · February 24, 2015

Serial Number 4166174 was reported as accurate.

Carrato 96 · August 23, 2014

Serial Number 4166388 was reported as accurate.

sangamo 20 · October 15, 2013

Serial Number 4166676 was reported as accurate.

Anonymous · October 11, 2013

Serial Number 4166391 was reported as inaccurate.

Note: 2 finger 3/4 plate w/false center bridge
Changes since this report was submitted:
Plate changed from Unknown to Bridge

Bluejay 179 · September 20, 2013

Serial Number 4166607 was reported as inaccurate.

Note: This movement has a 3/4 plate with a two finger
bridge. Great movement. All else is correct.
Changes since this report was submitted:
Plate changed from Unknown to Bridge

Anonymous · May 5, 2013

Serial Number 4166073 was reported as accurate.

Anonymous · January 30, 2013

Serial Number 4166292 was reported as accurate.