Hamilton Pocket Watch: Serial Number 542423 (Grade 940)

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Information Provided by PocketWatchDatabase.com: https://pocketwatchdatabase.com/search/result/hamilton/542423

From the American Horology Archive:

Hamilton Grade 940 Pocket Watch Movement

Hamilton Watch Co.

Grade: 940

Manufacturer:	Hamilton
Manufacturer Location:	Lancaster, Pennsylvania
Movement Serial Number:	542423
Grade:	940
Model:	1
Estimated Production Year:	1907
Run Quantity:	5,000
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
Double Roller:	Yes
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
Dial Feet Locations:	2.6, 18.0, 38.2
U.S. Patents:	832672, 427072
Data Research:	1953 Hamilton Serial List

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Data Verification Reports

538001

Verification Serial Map

543000

Anonymous · January 16, 2021

Serial Number 541846 was reported as accurate.

Anonymous · December 28, 2020

Serial Number 542951 was reported as accurate.

Anonymous · December 2, 2020

Serial Number 540096 was reported as accurate.

Anonymous · November 17, 2020

Serial Number 539599 was reported as accurate.

Anonymous · October 24, 2020

Serial Number 540274 was reported as accurate.

Anonymous · October 18, 2020

Serial Number 542870 was reported as accurate.

Anonymous · October 7, 2020

Serial Number 541786 was reported as accurate.

netmind 39 · July 5, 2020

Serial Number 540170 was reported as accurate.

Anonymous · April 23, 2020

Serial Number 540896 was reported as accurate.

Anonymous · February 18, 2020

Serial Number 538258 was reported as accurate.

Anonymous · October 1, 2019

Serial Number 541161 was reported as accurate.

gordo55 1 · September 27, 2019

Serial Number 541941 was reported as accurate.

Anonymous · July 29, 2019

Serial Number 539030 was reported as inaccurate.

Note: 539030 is a marked 946 23J Hamilton retailed by A.
N. Anderson of Minneapolis

Anonymous · May 19, 2019

Serial Number 540381 was reported as accurate.

Anonymous · April 27, 2019

Serial Number 538714 was reported as accurate.

Anonymous · April 16, 2019

Serial Number 542639 was reported as accurate.

Anonymous · April 9, 2019

Serial Number 542639 was reported as accurate.

Anonymous · March 29, 2019

Serial Number 538714 was reported as accurate.

Anonymous · February 16, 2019

Serial Number 539626 was reported as accurate.

Anonymous · January 7, 2019

Serial Number 540521 was reported as accurate.

WLBelkriver33 804 · December 8, 2018

Serial Number 540635 was reported as accurate.

Anonymous · July 18, 2018

Serial Number 539373 was reported as accurate.

Se7400 2 · April 25, 2018

Serial Number 542078 was reported as accurate.

Anonymous · April 14, 2018

Serial Number 540985 was reported as accurate.

Anonymous · April 2, 2018

Serial Number 538256 was reported as accurate.

Anonymous · March 2, 2018

Serial Number 540923 was reported as accurate.

Anonymous · December 17, 2017

Serial Number 542163 was reported as accurate.

Anonymous · December 2, 2017

Serial Number 539468 was reported as accurate.

Anonymous · November 29, 2017

Serial Number 539468 was reported as accurate.

Anonymous · September 2, 2017

Serial Number 539251 was reported as accurate.

Anonymous · June 30, 2017

Serial Number 540241 was reported as accurate.

Dogless 2 · April 19, 2017

Serial Number 538191 was reported as accurate.

Anonymous · April 14, 2017

Serial Number 539958 was reported as accurate.

Anonymous · February 14, 2017

Serial Number 539165 was reported as accurate.

richardot82749 3 · February 4, 2017

Serial Number 542989 was reported as accurate.

Anonymous · January 9, 2017

Serial Number 542365 was reported as accurate.

Anonymous · January 8, 2017

Serial Number 542879 was reported as accurate.

Anonymous · January 6, 2017

Serial Number 539516 was reported as accurate.

Anonymous · December 4, 2016

Serial Number 539151 was reported as accurate.

Anonymous · October 16, 2016

Serial Number 542970 was reported as accurate.