Illinois Pocket Watch: Serial Number 2728643 (Grade Sangamo Special)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/2728643

Access Date: April 25, 2024

From the American Horology Archive:

Illinois Watch Co.

Grade: Sangamo Special

Manufacturer:	Illinois
Manufacturer Location:	Springfield, Illinois
Movement Serial Number:	2728643
Grade:	Sangamo Special
Variation:	True Bridge
Model:	9
Estimated Production Year:	1915
Run Quantity:	600
Grade/Model Run:	11 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
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:	8671.G14.16S2502.169M111.O4021.L6048.21J622
Database Version:	v52.245
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:	12 (2.00%)
$ Estimated Value (12 Month Change):	9.18% Analyzing 152 Sales

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Production Metrics Tree: Grade Sangamo Special

Target Profile: 16S-M9-21J-ONL-A6PTI-TRUE BRIDGE

Illinois Grade Sangamo Special (All Variations): 30,260 ETP
16S: 12,660 41.84% 16s, Grade Sangamo Special			Other: 17,600 Other Sizes or Unclassified
16S-M9: 8,070 26.67% 16s, Grade Sangamo Special, Model 9		Other: 4,590 Other Models or Unclassified
16S-M9-21J: 3,350 11.07% 16s, Grade Sangamo Special, Model 9, 21 Jewels	Other: 4,720 Other Jewels or Unclassified
16S-M9-21J-ONL: 3,350 11.07% 16s, Grade Sangamo Special, Model 9, 21 Jewels, Openface/Lever/Nickel
16S-M9-21J-ONL-A6PTI: 3,350 11.07%
16S-M9-21J-ONL-A6PTI-TRUE BRIDGE: 2,450 8.10%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 12 watches in the population registry for this run with 2 images. Create a FREE account or login to view the population registry and add your watch to the registry. Create a Free Account

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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.

Gun4hire Supporter 42 · January 2, 2023

Serial Number 2728497 was reported as accurate.

Anonymous · October 20, 2022

Serial Number 2728152 was reported as accurate.

Anonymous · October 14, 2022

Serial Number 2728643 was reported as accurate.

Anonymous · October 14, 2022

Serial Number 2728643 was reported as accurate.

Anonymous · August 21, 2022

Serial Number 2728457 was reported as accurate.

SleepyDoggieDog 35 · August 20, 2022

Serial Number 2728643 was reported as accurate.

Anonymous · July 21, 2022

Serial Number 2728152 was reported as accurate.

Afox2009 22 · July 9, 2022

Serial Number 2728621 was reported as accurate.

Anonymous · May 4, 2022

Serial Number 2728152 was reported as accurate.

Anonymous · November 28, 2020

Serial Number 2728416 was reported as accurate.