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: 264924
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: v48.148

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

264001
Verification Serial Map
265000

pjmessmer Supporter 3 · September 8, 2021

Serial Number 264968 was reported as inaccurate.

Note: this serial # is from a 950
Curator Response: Thanks for the report. Double-check the serial number and enter the entire number.

Anonymous · December 11, 2020

Serial Number 264609 was reported as accurate.

Anonymous · February 8, 2020

Serial Number 264169 was reported as accurate.

Anonymous · January 23, 2020

Serial Number 264364 was reported as accurate.

Anonymous · January 22, 2020

Serial Number 264903 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · August 21, 2019

Serial Number 264142 was reported as accurate.

Anonymous · May 11, 2019

Serial Number 264909 was reported as accurate.

Anonymous · January 8, 2019

Serial Number 264187 was reported as accurate.

Anonymous · January 1, 2019

Serial Number 264472 was reported as accurate.

Anonymous · December 24, 2018

Serial Number 264573 was reported as accurate.

JPatrick 2 · August 8, 2018

Serial Number 264017 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · July 28, 2018

Serial Number 264090 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · March 6, 2017

Serial Number 264880 was reported as accurate.

Anonymous · January 9, 2016

Serial Number 264921 was reported as accurate.

Anonymous · July 6, 2015

Serial Number 264472 was reported as accurate.

Yellowtail420 Supporter 96 · June 20, 2015

Serial Number 264838 was reported as accurate.

Anonymous · March 21, 2015

Serial Number 264968 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · November 11, 2014

Serial Number 264731 was reported as accurate.

Anonymous · October 23, 2014

Serial Number 264041 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · May 20, 2014

Serial Number 264832 was reported as inaccurate.

Note: Serial #264832 is an 18 size,940 movement,21J.
Changes since this report was submitted:
Grade changed from 950e to 940
Size changed from 16 to 18
Factory Model changed from 3 to 1
Plate changed from Bridge to Full

Waltham21j 121 · April 11, 2014

Serial Number 264821 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Grade changed from 950e to 940
Size changed from 16 to 18
Factory Model changed from 3 to 1
Plate changed from Bridge to Full

Anonymous · January 13, 2014

Serial Number 264829 was reported as inaccurate.

Note: Movement is 940
Size 18
Full Plate
Changes since this report was submitted:
Grade changed from 950e to 940
Size changed from 16 to 18
Factory Model changed from 3 to 1
Plate changed from Bridge to Full

dechant 1 · October 12, 2013

Serial Number 264739 was reported as inaccurate.

Note: 21 jewel
Changes since this report was submitted:
Grade changed from 950e to 940
Size changed from 16 to 18
Jewels changed from 23j to 21j
Factory Model changed from 3 to 1
Plate changed from Bridge to Full

Anonymous · August 29, 2013

Serial Number 264017 was reported as accurate.

Changes since this report was submitted:
Grade changed from 950e to 940
Size changed from 16 to 18
Jewels changed from 23j to 21j
Factory Model changed from 3 to 1
Plate changed from Bridge to Full

Anonymous · August 29, 2013

Serial Number 264027 was reported as inaccurate.

Note: 950E did not exist in 1903. Watch is 940.
Changes since this report was submitted:
Grade changed from 950e to 940
Size changed from 16 to 18
Jewels changed from 23j to 21j
Factory Model changed from 3 to 1
Plate changed from Bridge to Full

Forrester 2 · August 3, 2013

Serial Number 264773 was reported as inaccurate.

Note: 21j instead of 23j
18s instead of 16s
Changes since this report was submitted:
Grade changed from 950e to 940
Size changed from 16 to 18
Jewels changed from 23j to 21j
Factory Model changed from 3 to 1
Plate changed from Bridge to Full

rah5241 1 · July 27, 2013

Serial Number 264031 was reported as inaccurate.

Note: It is a 950E 1935

Anonymous · June 6, 2013

Serial Number 264038 was reported as accurate.

Anonymous · March 11, 2013

Serial Number 264909 was reported as inaccurate.

Note: movement is 950, 23j
Changes since this report was submitted:
Plate changed from Unknown to Full

Anonymous · August 14, 2012

Serial Number 264233 was reported as accurate.

Anonymous · June 15, 2012

Serial Number 264971 was reported as accurate.

Anonymous · June 2, 2012

Serial Number 264971 was reported as inaccurate.

Note: Should be Hamilton 950 elinvar
Changes since this report was submitted:
Plate changed from Unknown to Full
Hamilton Grade 940 Pocket Watch Movement
Hamilton Grade 940 Pocket Watch Movement