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: 4720349
Grade: Sangamo Special
Variation: 60HR
Model: 13
Estimated Production Year: 1926
Run Quantity: 1,000
Grade/Model Run: 8 of 13
Grade/Model Total Production: 11,200
Variant Est. Production: 3,200 (17S-M13-23J-ONL-A6PTI-60HR)
Size: 17s
Jewels: 23j
Jewel Material: Ruby & Sapphire
Jewel Setting: Raised Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: False Center
Double Roller: Yes
Barrel: 60-Hr. Motor
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: 11965.G50.17S12.1713M8.O6709.L6963.23J254
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
33.53
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
113.72
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.197%
Registry Population: 38 (3.80%)
$ Estimated Value (12 Month Change): 3.23% Analyzing 169 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 · October 31, 2022

Serial Number 4720997 was reported as accurate.

Anonymous · April 11, 2022

Serial Number 4720433 was reported as inaccurate.

Note: 4720433. Under the Grade: Sagamo Special, should
be "Unmarked 60-Hour". The listing neglects that
the detail: Barrel - 60 Hr. Motor. A real world
test recently conducted on this watch demonstrated
that it ran for 58 hours and 23 minutes - not bad
for a 96 year old watch. From The Sangamo Special
- Beginning to End by Michael Chameleon
11-23-2006, it is stated that “(The Model 13’s
were all 60 Hour watches, however only the last
2200 were marked Sixty Hour)”. As I am planning
to sell the watch, the omission of these details
can have a huge impact on its value. It would be
greatly appreciated if the information be updated.
I thank-you in advance.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

wlcheat74 2 · June 22, 2021

Serial Number 4720019 was reported as accurate.

Anonymous · November 10, 2020

Serial Number 4720239 was reported as accurate.

Anonymous · October 27, 2020

Serial Number 4720236 was reported as accurate.

Bluejay 179 · February 28, 2020

Serial Number 4720735 was reported as accurate.

Anonymous · June 8, 2019

Serial Number 4720914 was reported as accurate.

dwmakos 8 · May 7, 2019

Serial Number 4720004 was reported as accurate.

dfchong 837 · April 28, 2019

Serial Number 4720116 was reported as accurate.

Anonymous · March 15, 2019

Serial Number 4720691 was reported as accurate.

dfchong 837 · November 29, 2018

Serial Number 4720686 was reported as accurate.

Anonymous · March 16, 2018

Serial Number 4720307 was reported as accurate.

tysonni Supporter 59 · March 7, 2018

Serial Number 4720180 was reported as accurate.

Anonymous · January 18, 2018

Serial Number 4720337 was reported as accurate.

tysonni Supporter 59 · August 16, 2017

Serial Number 4720180 was reported as accurate.

Anonymous · August 14, 2017

Serial Number 4720264 was reported as accurate.

Anonymous · May 29, 2017

Serial Number 4720811 was reported as accurate.

Anonymous · February 18, 2017

Serial Number 4720210 was reported as accurate.

dfchong 837 · December 4, 2016

Serial Number 4720473 was reported as accurate.

dfchong 837 · November 29, 2016

Serial Number 4720473 was reported as accurate.

dfchong 837 · November 20, 2016

Serial Number 4720844 was reported as accurate.

Anonymous · September 5, 2016

Serial Number 4720934 was reported as accurate.

Anonymous · June 26, 2016

Serial Number 4720472 was reported as accurate.

Anonymous · April 22, 2016

Serial Number 4720736 was reported as accurate.

yrazis Supporter 9 · March 16, 2016

Serial Number 4720624 was reported as accurate.

yrazis Supporter 9 · March 16, 2016

Serial Number 4720646 was reported as accurate.

Anonymous · January 27, 2016

Serial Number 4720726 was reported as accurate.

Pocketwatchlover 71 · January 16, 2016

Serial Number 4720736 was reported as accurate.

Anonymous · February 3, 2015

Serial Number 4720063 was reported as accurate.

mdcars 30 · July 25, 2014

Serial Number 4720264 was reported as accurate.

Anonymous · July 5, 2014

Serial Number 4720063 was reported as accurate.

Anonymous · March 25, 2014

Serial Number 4720304 was reported as accurate.

Anonymous · February 9, 2014

Serial Number 4720181 was reported as accurate.

plato99 11 · September 4, 2013

Serial Number 4720372 was reported as accurate.

Anonymous · August 28, 2013

Serial Number 4720104 was reported as accurate.

Anonymous · May 30, 2013

Serial Number 4720601 was reported as accurate.

Anonymous · May 23, 2013

Serial Number 4720238 was reported as accurate.

Anonymous · February 11, 2013

Serial Number 4720475 was reported as accurate.

Illinois Grade Sangamo Special Pocket Watch