Illinois Pocket Watch: Serial Number 227550 (Grade 101)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/227550

Access Date: March 21, 2023

From the American Horology Archive:

Illinois Watch Co.

Grade: 101

5th Pinion.

Manufacturer:	Illinois
Manufacturer Location:	Springfield, Illinois
Movement Serial Number:	227550
Grade:	101
Model:	3
Class:	5
Estimated Production Date:	December 1880
Run Quantity:	200
Grade/Model Total Production:	18,830
Variant Est. Production:	18,730 (18S-M3-11J)
Size:	18s
Jewels:	11j
Jewel Setting:	Burnished Jewels
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Lever
Plate:	Full Plate
Barrel:	Going
Balance Type:	Expansion
Train:	Coarse
Regulator:	Plain
Hairspring:	Flat
Standard Dial Type:	Single-Sunk
Adjusted:	No
Railroad Grade:	No
Dial Feet Locations:	1.5, 21.5, 38.0
Case Screw Locations:	23.5, 51.5
Case:	Various
Database Version:	v50.306
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	55.38
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	195.03
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.331%
Registry Population:	2 (1.00%)

Value Guide

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Production Metrics Tree: Grade 101

Target Profile: 18S-M3-11J-ONL-U

Illinois Grade 101 (All Variations): 87,950 ETP
18S: 87,950 100.00% 18s, Grade 101
18S-M3: 18,830 21.41% 18s, Grade 101, Model 3		Other: 69,120 Other Models or Unclassified
18S-M3-11J: 18,730 21.30% 18s, Grade 101, Model 3, 11 Jewels	Other: 100 Other Jewels or Unclassified
18S-M3-11J-ONL: 18,730 21.30% 18s, Grade 101, Model 3, 11 Jewels, Openface/Lever/Nickel
18S-M3-11J-ONL-U: 18,730 21.30%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
1		227448	#48	Marketplace	March 11, 2018
2	Image Credit: davis731	227550	#150	Collection	February 27, 2022
Standard Deviation of Known Examples: 72.12 (Expected: 57.88, Δ14.25/7.12%)

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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.