Illinois Pocket Watch: Serial Number 2917742 (Grade Sangamo Special)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/2917742

Access Date: February 16, 2025

From the American Horology Archive:

Illinois Watch Co.

Grade: Sangamo Special

Manufacturer:	Illinois
Manufacturer Location:	Springfield, Illinois
Movement Serial Number:	2917742
Grade:	Sangamo Special
Variation:	False Bridge
Model:	9
Estimated Production Year:	1916
Run Quantity:	400
Grade/Model Run:	20 of 25
Grade/Model Total Production:	8,070
Variant Est. Production:	1,710 (16S-M9-23J-ONL-A6PTI-FALSE BRIDGE)
Size:	16s
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:	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:	9322.G23.16S2738.169M210.O4497.L6229.23J179
Database Version:	v52.608
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: Scoped for This Run Only	8 (2.00%)
$ Estimated Value (12 Month Change):	-12.31% Analyzing 107 Sales

Value Guide

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Production Metrics Tree: Grade Sangamo Special

Target Profile: 16S-M9-23J-ONL-A6PTI-FALSE 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-M9-23J: 3,420 11.30% 16s, Grade Sangamo Special, Model 9, 23 Jewels		Other: 4,650 Other Jewels or Unclassified
16S-M9-23J-ONL: 3,420 11.30% 16s, Grade Sangamo Special, Model 9, 23 Jewels, Openface/Lever/Nickel
16S-M9-23J-ONL-A6PTI: 3,420 11.30%
16S-M9-23J-ONL-A6PTI-FALSE BRIDGE: 1,710 5.65%	Other: 1,710 Other Variants or Unclassified

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 8 watches in the population registry for this run with 1 image. 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.