Pocket Watch Database

From the American Horology Archive:
Illinois Grade Sangamo Pocket Watch

Illinois Watch Co.

Grade: Sangamo

Mixed Run: 21-Jewel and 23-Jewel Movements

Private Label(s) in Run:

Ariston U.S.A.
Benjamin Franklin U.S.A.
Grover Ulysses

What is a Private Label?
Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 1977495
Grade: Sangamo
Model: 4
Estimated Production Year: 1907
Run Quantity: 200
Grade/Model Run: 35 of 57
Grade/Model Total Production: 7,385
Size: 16s
Jewels: 23j    Mixed Run
Jewel Material: Ruby
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Hunting
Movement Finish: Nickel
Finish Pattern: Bright-spotted
Movement Setting: Lever
Plate: 3/4 Plate
Double Roller: Yes
Barrel: Going
Train Material: Gold
Center Wheel Material: Gold
Regulator: Micrometric
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 6
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Dial Feet Locations: 24.5, 36.5, 55.5
Case Screw Locations: 18.5, 52.5
Movement Markings: Sangamo
Illinois Watch Co.
Springfield
Adjusted
[Some Marked "Temperature 6 Positions Isochronism"]
[Some Marked "Safety Pinion"]
[Some Marked "Double Roller"]
[21, 23, or 25] Ruby Jewels
Case: Various
Run ID: 5901.G87.16S1372.164M654.H3006.L4750.23J44
Database Version: v52.245
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
22.23
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
74.95
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.130%
Registry Population: 4 (2.00%)
$ Estimated Value (12 Month Change): 0.63% Analyzing 82 Sales
Research Note: #1977507: Marked "Aristan U.S.A.; 21 Ruby Jewels; Adjusted; Temperature; 6 Positions; Isochronism; Double Roller" [NAWCC] #1977417: Verified as private label marked "Grover Ulysses" with a custom damaskeening pattern.

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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 · November 24, 2023

Serial Number 1977507 was reported as accurate.

Ellingsworth 2 · December 29, 2022

Serial Number 1977417 was reported as inaccurate.

Note: Unique movement damaskeening not previously seen
on Sangamo. And 21 ruby jewels, not 23. Private
label to Grover Ulysses.
Curator Response: Thanks for the report. The database has been updated accordingly.

cliffdobbins Supporter 296 · September 14, 2022

Serial Number 1977577 was reported as accurate.

Anonymous · July 18, 2021

Serial Number 1977560 was reported as accurate.

Anonymous · December 24, 2019

Serial Number 1977417 was reported as inaccurate.

Note: 21 jewel and sunburst pattern. very unique.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

Kevinclardy 3 · October 4, 2018

Serial Number 1977495 was reported as accurate.

Anonymous · September 25, 2018

Serial Number 1977495 was reported as accurate.

Anonymous · May 2, 2018

Serial Number 1977417 was reported as inaccurate.

Note: Marked 21 ruby jewel

Anonymous · September 25, 2017

Serial Number 1977495 was reported as inaccurate.

Note: 23 jewels
Changes since this report was submitted:
Jewels changed from 21j to 23j

Tempusfugit207 Supporter 4 · January 7, 2015

Serial Number 1977450 was reported as inaccurate.

Note: Serial number 1977450 is a 21 jewel

Anonymous · January 29, 2014

Serial Number 1977428 was reported as inaccurate.

Note: specialy adjusted

Anonymous · November 17, 2012

Serial Number 1977495 was reported as inaccurate.

Note: 23 jewel
Changes since this report was submitted:
Jewels changed from 21j to 23j
Double Roller changed from Unknown to Yes

Anonymous · October 25, 2012

Serial Number 1977495 was reported as inaccurate.

Note: This watch Sr.# 1977495 is marked 23j not 2j
Changes since this report was submitted:
Jewels changed from 21j to 23j
Double Roller changed from Unknown to Yes

Anonymous · October 19, 2012

Serial Number 1977495 was reported as inaccurate.

Note: THIS IS 23 JEWELS
Changes since this report was submitted:
Jewels changed from 21j to 23j
Illinois Grade Sangamo Pocket Watch