Pocket Watch Database


From the American Horology Archive:
Illinois Grade Sangamo Special Pocket Watch

Illinois Watch Co.

Grade: Sangamo Special

Manufacturer: Illinois Question Mark
Manufacturer Location: Springfield, Illinois Question Mark
Movement Serial Number: 2970364 Question Mark
Grade: Sangamo Special Question Mark
Variation: False Bridge Question Mark
Model: 9 Question Mark
Estimated Production Year: 1916 Question Mark
Run Quantity: 500 Question Mark
Grade/Model Run: 23 of 25 Question Mark
Grade/Model Total Production: 8,070 Question Mark
Variant Est. Production: 1,710 (16S-M9-23J-ONL-A6PTI-FALSE BRIDGE) Question Mark
Size: 16s Question Mark
Jewels: 23j Question Mark
Jewel Material: Ruby & Sapphire 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: Going 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
Dial Feet Locations: 17.5, 39.0, 58.0 Question Mark
Case Screw Locations: 3.0, 38.0 Question Mark
Case: Various Question Mark
Run ID: 9483.G26.16S2782.169M226.O4634.L6249.23J185 Question Mark
Database Version: v52.428 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
24.29 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
81.91 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.142% Question Mark
Registry Population:
Scoped for This Run Only
14 (2.80%) Question Mark
$ Estimated Value (12 Month Change): -3.24% Analyzing 107 Sales Question Mark

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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.


cjbrem Supporter 859 · June 11, 2023

Serial Number 2970364 was reported as accurate.

DaveReid 52 · May 14, 2022

Serial Number 2970123 was reported as accurate.

cranemaker Supporter 82 · April 10, 2022

Serial Number 2970141 was reported as accurate.

Anonymous · July 10, 2020

Serial Number 2970364 was reported as accurate.

Carterp935 3 · April 5, 2019

Serial Number 2970467 was reported as accurate.

Anonymous · April 5, 2019

Serial Number 2970467 was reported as accurate.

Anonymous · January 8, 2019

Serial Number 2970467 was reported as accurate.

Anonymous · April 12, 2018

Serial Number 2970065 was reported as accurate.

Anonymous · August 5, 2017

Serial Number 2970085 was reported as accurate.

Anonymous · August 19, 2016

Serial Number 2970242 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

darkstar 247 · March 30, 2015

Serial Number 2970208 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · June 4, 2013

Serial Number 2970234 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge
Illinois Grade Sangamo Special Pocket Watch