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: 242409
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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Does this information describe your movement accurately?

Data Verification Reports

242001
Verification Serial Map
243000

Anonymous · February 15, 2019

Serial Number 242689 was reported as accurate.

Anonymous · December 24, 2018

Serial Number 242341 was reported as accurate.

Anonymous · November 18, 2018

Serial Number 242246 was reported as accurate.

Anonymous · May 13, 2017

Serial Number 242527 was reported as accurate.

rock862 242 · August 6, 2016

Serial Number 242350 was reported as accurate.

catman032076 101 · June 30, 2016

Serial Number 242689 was reported as accurate.

Anonymous · January 29, 2016

Serial Number 242892 was reported as accurate.

time123 2 · December 20, 2014

Serial Number 242140 was reported as accurate.

Anonymous · May 17, 2014

Serial Number 242037 was reported as accurate.

Anonymous · January 14, 2014

Serial Number 242794 was reported as accurate.

Anonymous · August 13, 2013

Serial Number 0242560 was reported as accurate.

Anonymous · June 19, 2013

Serial Number 242124 was reported as accurate.

jfbachert 2 · June 12, 2013

Serial Number 0242836 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from Unknown to Full

Anonymous · June 12, 2013

Serial Number 0242836 was reported as accurate.

Anonymous · November 30, 2012

Serial Number 242124 was reported as accurate.

Hamilton Grade 940 Pocket Watch Movement
Hamilton Grade 940 Pocket Watch Movement