Pocket Watch Database

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

Illinois Watch Co.

Grade: Sangamo Special

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 2575542
Grade: Sangamo Special
Variation: True Bridge
Model: 9
Estimated Production Year: 1913
Run Quantity: 600
Grade/Model Run: 6 of 25
Grade/Model Total Production: 8,070
Variant Est. Production: 2,450 (16S-M9-21J-ONL-A6PTI-TRUE BRIDGE)
Size: 16s
Jewels: 21j
Jewel Material: Ruby, Sapphire & Diamond
Jewel Setting: Raised Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: True Bridge
Double Roller: Yes
Barrel: Going
Train Material: Gold
Center Wheel Material: Gold
Hairspring: Breguet
Pallet Jewel Material: Ruby
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 6
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Dial Feet Locations: 17.5, 39.0, 58.0
Case Screw Locations: 3.0, 38.0
Case: Various
Run ID: 8143.G6.16S2279.169M36.O3697.L5884.21J568
Database Version: v52.241
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
24.29
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
81.91
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.142%
Registry Population: 16 (2.67%)
$ Estimated Value (12 Month Change): 9.18% Analyzing 152 Sales

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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 · July 12, 2021

Serial Number 2575768 was reported as accurate.

Anonymous · June 2, 2021

Serial Number 2575692 was reported as accurate.

king5611 5 · January 22, 2021

Serial Number 2575514 was reported as inaccurate.

Note: Jewel Material : Diamond , Ruby and Sapphire
Curator Response: Thanks for the report. The database has been updated accordingly.

Anonymous · August 12, 2020

Serial Number 2575469 was reported as accurate.

bunnofnickle 67 · July 25, 2020

Serial Number 2575469 was reported as inaccurate.

Note: Mine has a diamond end cap

Anonymous · May 22, 2019

Serial Number 2575514 was reported as accurate.

WLBelkriver33 804 · May 18, 2019

Serial Number 2575514 was reported as accurate.

LostDutchman Supporter 44 · January 8, 2019

Serial Number 2575514 was reported as accurate.

Anonymous · January 2, 2018

Serial Number 2575283 was reported as accurate.

Anonymous · April 6, 2015

Serial Number 2575794 was reported as accurate.

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

Anonymous · January 25, 2015

Serial Number 2575754 was reported as accurate.

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

dav41van Supporter 52 · October 19, 2013

Serial Number 2575578 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge
Illinois Grade Sangamo Special Pocket Watch