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: 920946
Grade: 940
Model: 1
To Finishing Dept: Sep 11, 1911
Run Quantity: 2,000
Total Production: 210,596
Size: 18s
Jewels: 21j
Jewel Material: Ruby
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Damaskeened
Movement Signing Style: Serif (Decorative)
Movement Inlay Color: Gilt
Movement Setting: Lever
Plate: Full Plate
Double Roller: Yes
Barrel: Motor
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
Movement Markings: Hamilton Watch Co.
Lancaster, Pa.
Motor Barrel
940
Adjusted 5 Positions
21 Jewels
Double Roller
Safety Pinion
Data Research: 1953 Hamilton Serial List

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

919001
Verification Serial Map
921000

Anonymous · October 21, 2020

Serial Number 920771 was reported as accurate.

Anonymous · June 9, 2020

Serial Number 919137 was reported as accurate.

Anonymous · June 4, 2020

Serial Number 919282 was reported as accurate.

Anonymous · April 17, 2020

Serial Number 919371 was reported as accurate.

pocketwatch101 111 · April 1, 2020

Serial Number 920946 was reported as accurate.

Ozzie65 2 · February 3, 2020

Serial Number 919279 was reported as accurate.

Anonymous · February 1, 2020

Serial Number 919371 was reported as accurate.

Anonymous · December 21, 2019

Serial Number 919898 was reported as accurate.

Anonymous · August 15, 2019

Serial Number 920079 was reported as accurate.

Anonymous · March 23, 2019

Serial Number 920179 was reported as accurate.

Jc0925 1 · March 3, 2019

Serial Number 919226 was reported as accurate.

Mobilaero 229 · September 15, 2018

Serial Number 919833 was reported as accurate.

Anonymous · September 2, 2018

Serial Number 919708 was reported as accurate.

von1943 357 · May 27, 2018

Serial Number 919743 was reported as accurate.

von1943 357 · May 27, 2018

Serial Number 919743 was reported as accurate.

Anonymous · March 13, 2018

Serial Number 920379 was reported as accurate.

dcooper 117 · January 14, 2018

Serial Number 919543 was reported as accurate.

Anonymous · September 18, 2017

Serial Number 920946 was reported as accurate.

Anonymous · May 12, 2017

Serial Number 919543 was reported as accurate.

Anonymous · November 14, 2016

Serial Number 920666 was reported as accurate.

Anonymous · November 6, 2016

Serial Number 920666 was reported as accurate.

JTBrooks 5 · November 29, 2015

Serial Number 920506 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · November 29, 2015

Serial Number 920506 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · September 29, 2015

Serial Number 920226 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 16, 2015

Serial Number 920718 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · July 27, 2014

Serial Number 920992 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · February 9, 2014

Serial Number 919451 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 14, 2013

Serial Number 919738 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · April 6, 2013

Serial Number 919833 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · October 27, 2012

Serial Number 919042 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · October 21, 2012

Serial Number 920675 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · July 15, 2012

Serial Number 919556 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · May 31, 2012

Serial Number 919833 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · May 25, 2012

Serial Number 919833 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes
Hamilton Grade 940 Pocket Watch Movement
Hamilton Grade 940 Pocket Watch Movement