Illinois Pocket Watch: Serial Number 221041 (Grade 101)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/illinois/221041

Access Date: January 27, 2023

From the American Horology Archive:

Illinois Watch Co.

Grade: 101

Manufacturer:	Illinois
Manufacturer Location:	Springfield, Illinois
Movement Serial Number:	221041
Grade:	101
Model:	2
Class:	5
Estimated Production Date:	August 1880
Run Quantity:	500
Grade/Model Total Production:	38,400
Variant Est. Production:	38,100 (18S-M2-11J)
Size:	18s
Jewels:	11j
Jewel Setting:	Burnished Jewels
Movement Configuration:	Hunting
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:	16.5, 36.5, 53.0
Case Screw Locations:	23.5, 51.5
Case:	Various
Registry Population:	4 (0.80%)
Database Version:	v49.701

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Production Metrics Tree: Grade 101

Target Profile: 18S-M2-11J-HNL-U

Illinois Grade 101 (All Variations): 87,950 ETP
18S: 87,950 100.00% 18s, Grade 101
18S-M2: 38,400 43.66% 18s, Grade 101, Model 2		Other: 49,550 Other Models or Unclassified
18S-M2-11J: 38,100 43.32% 18s, Grade 101, Model 2, 11 Jewels	Other: 300 Other Jewels or Unclassified
18S-M2-11J-HNL: 38,100 43.32% 18s, Grade 101, Model 2, 11 Jewels, Hunting/Lever/Nickel
18S-M2-11J-HNL-U: 38,100 43.32%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
1		220954	#254	Inferred
2		221000	#300	Marketplace	July 13, 2015
3	Image Credit: WHinder	221041	#341	Collection	July 12, 2015
4		221114	#414	Marketplace	December 29, 2018
Standard Deviation of Known Examples: 67.88 (Expected: 144.48, Δ76.60/15.32%)

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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.