Pocket Watch Database

We noticed that you entered a relatively short serial number.
"806" could possibly indicate the grade of the watch and not the serial number of your movement. Serial numbers are usually more than a few digits.
From the American Horology Archive:
Illinois Grade Mason Pocket Watch Movement

Illinois Watch Co.

Grade: Mason

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 806
Grade: Mason
Model: 1
Estimated Production Date: June 1872 - October 1872
Run Quantity: 500
Total Production: 10,300
Size: 18s
Jewels: 7j
Movement Configuration: Adaptable
Movement Setting: Key
Plate: Full Plate
Barrel: Going
Train: Coarse
Railroad Grade: No
Dial Feet Locations: 16.5, 36.5, 53.0
Case Screw Locations: O-36.5, H-51.5
Database Version: v48.141

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Data Verification Reports

501
Verification Serial Map
1000

Bostonjoe Top Contributor 169 · April 16, 2022

Serial Number 806 was reported as accurate.

cmdraven 3371 · August 20, 2021

Serial Number 613 was reported as accurate.

Anonymous · July 29, 2021

Serial Number 539 was reported as accurate.

giddykippa 231 · July 24, 2021

Serial Number 806 was reported as accurate.

2mnyboxers Supporter 307 · February 7, 2019

Serial Number 869 was reported as accurate.

Anonymous · September 6, 2018

Serial Number 871 was reported as accurate.

tremendez 17 · June 12, 2018

Serial Number 906 was reported as accurate.

Anonymous · August 25, 2017

Serial Number 897 was reported as accurate.

Anonymous · August 14, 2016

Serial Number 756 was reported as accurate.

Anonymous · June 5, 2016

Serial Number 897 was reported as accurate.

dav41van 50 · December 7, 2013

Serial Number 567 was reported as accurate.

Anonymous · September 19, 2013

Serial Number 780 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · April 18, 2013

Serial Number 521 was reported as accurate.

Anonymous · September 11, 2012

Serial Number 662 was reported as accurate.

Anonymous · August 3, 2012

Serial Number 759 was reported as inaccurate.

No further details were submitted with the report.
Illinois Grade Mason Pocket Watch Movement