Illinois Pocket Watch: Serial Number 3178992 (Grade Sangamo Special)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/3178992

Access Date: October 13, 2024

From the American Horology Archive:

Illinois Watch Co.

Grade: Sangamo Special

Manufacturer:	Illinois
Manufacturer Location:	Springfield, Illinois
Movement Serial Number:	3178992
Grade:	Sangamo Special
Variation:	False Bridge
Model:	10
Estimated Production Year:	1917
Run Quantity:	100
Grade/Model Run:	1 of 9
Grade/Model Total Production:	4,340
Size:	16s
Jewels:	23j
Jewel Material:	Ruby & Sapphire
Jewel Setting:	Raised Gold Settings (Screw-Set)
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Signing Style:	Block Letter
Movement Inlay Color:	Copper
Movement Setting:	Lever
Plate:	Bridge Plate
Bridge Type:	False Center
Double Roller:	Yes
Barrel:	48-Hr. Motor
Train Material:	Gold
Center Wheel Material:	Gold
Regulator:	Reed
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
Movement Markings:	Illinois Watch Co. Springfield Sangamo Special 23 Jewels Motor Barrel Adjusted Temp. And Six Positions D.R.
Case:	Various
Run ID:	9915.G29.16S2952.1610M2.O4956.L6357.23J192
Database Version:	v52.407
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	13.06
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	44.00
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.076%
Registry Population: Scoped for This Run Only	6 (6.00%)
$ Estimated Value (12 Month Change):	1.43% Analyzing 136 Sales

Value Guide

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Production Metrics Tree: Grade Sangamo Special

Target Profile: 16S-M10-23J-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-M10: 4,340 14.34% 16s, Grade Sangamo Special, Model 10	Other: 8,320 Other Models or Unclassified
16S-M10-23J: 4,340 14.34% 16s, Grade Sangamo Special, Model 10, 23 Jewels
16S-M10-23J-ONL: 4,340 14.34% 16s, Grade Sangamo Special, Model 10, 23 Jewels, Openface/Lever/Nickel
16S-M10-23J-ONL-A6PTI: 4,340 14.34%
16S-M10-23J-ONL-A6PTI-FALSE BRIDGE: 4,340 14.34%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 6 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.