Pocket Watch Database

From the American Horology Archive:
Hamilton Grade 940 Pocket Watch Movement
Hamilton Grade 940 Pocket Watch Movement

Hamilton Watch Co.

Grade: 940

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 260850
Grade: 940
Model: 1
Estimated Production Year: 1903
Run Quantity: 1,000
Total Production: 210,596
Size: 18s
Jewels: 21j
Jewel Material: Ruby
Jewel Setting: Screw-Set
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Damaskeened
Movement Inlay Color: Gilt
Movement Setting: Lever
Plate: Full Plate
Barrel: Going
Regulator: Goldthwait
Hairspring: Breguet
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Railroad Grade Classification: Class A
Dial Feet Locations: 2.6, 18.0, 38.2
U.S. Patents: 832672, 427072
Data Research: 1953 Hamilton Serial List
Database Version: v48.021

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Data Verification Reports

260001
Verification Serial Map
261000

Anonymous · March 12, 2022

Serial Number 260348 was reported as accurate.

Anonymous · July 2, 2020

Serial Number 260238 was reported as accurate.

Anonymous · June 28, 2020

Serial Number 260399 was reported as accurate.

Anonymous · November 2, 2019

Serial Number 260150 was reported as accurate.

Anonymous · October 15, 2019

Serial Number 260629 was reported as accurate.

Anonymous · November 13, 2018

Serial Number 260836 was reported as accurate.

Anonymous · October 20, 2018

Serial Number 260237 was reported as accurate.

Anonymous · January 8, 2018

Serial Number 260925 was reported as accurate.

Anonymous · September 19, 2017

Serial Number 260844 was reported as accurate.

Anonymous · August 17, 2017

Serial Number 260948 was reported as accurate.

Anonymous · December 3, 2016

Serial Number 260227 was reported as accurate.

Anonymous · January 29, 2016

Serial Number 260399 was reported as accurate.

Anonymous · January 11, 2016

Serial Number 260378 was reported as accurate.

Gasperoff 727 · December 6, 2015

Serial Number 260378 was reported as accurate.

Anonymous · August 3, 2014

Serial Number 260151 was reported as accurate.

Anonymous · February 4, 2014

Serial Number 0260084 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · April 11, 2013

Serial Number 260186 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from Unknown to Full
Hamilton Grade 940 Pocket Watch Movement
Hamilton Grade 940 Pocket Watch Movement