Pocket Watch Database

From the American Horology Archive:
Illinois Grade Hoyt Pocket Watch

Illinois Watch Co.

Grade: Hoyt

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 20326
Grade: Hoyt
Model: 1
Estimated Production Date: June 1874
Run Quantity: 2,000
Grade/Model Total Production: 14,400
Size: 18s
Jewels: 9j
Jewel Setting: Burnished Jewels
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
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: O-36.5, H-51.5
Movement Markings: Hoyt
Springfield, Ill.
Patent Pinion
Case: Various
Registry Population: 6 (0.30%)
Database Version: v49.708

Production Metrics Tree: Grade Hoyt

Target Profile: 18S-M1-9J-HGK-U

Illinois Grade Hoyt (All Variations): 15,000 ETP
18S: 15,000 100.00%
18s, Grade Hoyt
18S-M1: 14,400 96.00%
18s, Grade Hoyt, Model 1
Other: 600
Other Models or Unclassified
18S-M1-9J: 14,400 96.00%
18s, Grade Hoyt, Model 1, 9 Jewels
18S-M1-9J-HGK: 14,400 96.00%
18s, Grade Hoyt, Model 1, 9 Jewels, Adaptable/Key/Gilt
18S-M1-9J-HGK-U: 14,400 96.00%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1
Image Credit: DustinN
20259 #259 Collection June 21, 2022
2
Image Credit: pivotkiller
20326 #326 Collection March 26, 2015
3 20327 #327 Inferred
4 20341 #341 Inferred
5
Image Credit: esoxhunter
20398 #398 Collection August 10, 2020
6
Image Credit: winterwolf
21255 #1255 Collection February 26, 2019
Standard Deviation of Known Examples: 380.14 (Expected: 577.49, Δ197.36/9.87%)

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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.


Anonymous · July 22, 2022

Serial Number 20132 was reported as accurate.

Anonymous · December 28, 2020

Serial Number 21328 was reported as accurate.

Anonymous · July 25, 2020

Serial Number 21494 was reported as accurate.

Anonymous · December 20, 2019

Serial Number 20426 was reported as accurate.

Anonymous · October 1, 2019

Serial Number 20193 was reported as accurate.

Anonymous · May 22, 2019

Serial Number 20469 was reported as accurate.

Anonymous · February 3, 2018

Serial Number 21828 was reported as accurate.

Anonymous · August 26, 2017

Serial Number 21809 was reported as accurate.

Anonymous · August 4, 2017

Serial Number 21863 was reported as accurate.

RomanWatchRepair 28 · February 20, 2017

Serial Number 21636 was reported as accurate.

SonofBarb 1 · December 15, 2016

Serial Number 20174 was reported as accurate.

Danca4pu 1 · October 5, 2016

Serial Number 20341 was reported as inaccurate.

Note: This is a railroad watch
Curator Response: Thanks for the report. However, this watch would not have qualified for railroad service.

Anonymous · July 11, 2016

Serial Number 21924 was reported as accurate.

Anonymous · August 18, 2015

Serial Number 20697 was reported as accurate.

Anonymous · July 24, 2015

Serial Number 21048 was reported as accurate.

Anonymous · July 22, 2015

Serial Number 21048 was reported as accurate.

daddo46 987 · July 17, 2015

Serial Number 21048 was reported as accurate.

Anonymous · April 23, 2015

Serial Number 21048 was reported as accurate.

Anonymous · April 22, 2015

Serial Number 21048 was reported as accurate.

Anonymous · July 28, 2014

Serial Number 20084 was reported as accurate.

Jim90078 35 · December 11, 2013

Serial Number 21544 was reported as accurate.

Anonymous · February 5, 2013

Serial Number 20326 was reported as accurate.

Anonymous · January 18, 2013

Serial Number 21887 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Movement Finish changed from Unknown to Gilt
Adjusted changed from Unknown to No
Railroad Grade changed from Unknown to No

Anonymous · January 18, 2013

Serial Number 21887 was reported as accurate.

Illinois Grade Hoyt Pocket Watch