Pocket Watch Database

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

Hamilton Watch Co.

Grade: 940

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 598342
Grade: 940
Model: 1
Estimated Production Year: 1909
Run Quantity: 7,000
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: 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
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
Case: Various
Database Version: v48.443
Research Note: Early movements in this run may not feature the motor barrel. #594076 has been verified as having a going barrel. Various observations within this run has indicated later movements feature the motor barrel despite the barrel bridge not being marked as such.

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

594001
Verification Serial Map
601000

Anonymous · August 12, 2022

Serial Number 596100 was reported as accurate.

Anonymous · April 23, 2022

Serial Number 594279 was reported as accurate.

Anonymous · April 17, 2022

Serial Number 596959 was reported as inaccurate.

Note: This serial has a going barrel, not a motor
barrel.
Curator Response: Thanks for the confirmation!

Anonymous · March 14, 2022

Serial Number 600137 was reported as accurate.

PHIL1199 Supporter 531 · February 19, 2022

Serial Number 594312 was reported as accurate.

Anonymous · January 4, 2022

Serial Number 595844 was reported as accurate.

Anonymous · December 28, 2021

Serial Number 595844 was reported as accurate.

Anonymous · November 29, 2021

Serial Number 598112 was reported as accurate.

Anonymous · October 21, 2021

Serial Number 598112 was reported as accurate.

Anonymous · September 16, 2021

Serial Number 594803 was reported as accurate.

Anonymous · May 16, 2021

Serial Number 595786 was reported as accurate.

Anonymous · February 11, 2021

Serial Number 596790 was reported as inaccurate.

Note: motor barrel
Curator Response: Thanks for the report. The database has been updated accordingly.

Anonymous · January 29, 2021

Serial Number 597824 was reported as accurate.

Anonymous · January 5, 2021

Serial Number 596180 was reported as accurate.

Anonymous · November 26, 2020

Serial Number 594249 was reported as accurate.

Anonymous · September 20, 2020

Serial Number 600882 was reported as accurate.

dayvault 9 · July 2, 2020

Serial Number 596572 was reported as accurate.

Anonymous · June 26, 2020

Serial Number 600688 was reported as accurate.

Anonymous · June 8, 2020

Serial Number 600688 was reported as accurate.

Anonymous · June 7, 2020

Serial Number 600204 was reported as accurate.

Anonymous · May 23, 2020

Serial Number 595342 was reported as accurate.

Anonymous · May 15, 2020

Serial Number 594797 was reported as accurate.

Anonymous · February 4, 2020

Serial Number 594640 was reported as accurate.

Anonymous · January 22, 2020

Serial Number 599402 was reported as accurate.

gregandjulie 1 · January 12, 2020

Serial Number 599109 was reported as accurate.

Anonymous · December 5, 2019

Serial Number 596802 was reported as accurate.

Anonymous · November 22, 2019

Serial Number 596888 was reported as accurate.

Anonymous · November 14, 2019

Serial Number 600639 was reported as accurate.

Anonymous · August 24, 2019

Serial Number 596764 was reported as accurate.

Anonymous · March 9, 2019

Serial Number 597333 was reported as accurate.

Anonymous · February 14, 2019

Serial Number 600347 was reported as accurate.

Anonymous · February 8, 2019

Serial Number 597690 was reported as accurate.

Anonymous · January 28, 2019

Serial Number 600555 was reported as accurate.

Anonymous · December 23, 2018

Serial Number 594416 was reported as accurate.

Anonymous · November 21, 2018

Serial Number 594631 was reported as accurate.

Anonymous · August 5, 2018

Serial Number 598410 was reported as accurate.

Anonymous · July 10, 2018

Serial Number 598410 was reported as accurate.

Anonymous · June 25, 2018

Serial Number 597059 was reported as accurate.

Anonymous · May 8, 2018

Serial Number 599621 was reported as accurate.

Anonymous · April 18, 2018

Serial Number 597532 was reported as accurate.

Anonymous · April 15, 2018

Serial Number 599961 was reported as inaccurate.

Note: 599961 model 940.
The description describes the jewels as ruby.. I
note that on my example, one of the visible jewels
is clear. Could it be Safire or Diamond? Possible
a retrofit?
Curator Response: The Grade 940 plate jewels should be ruby. If one of the plate jewels is clear, it is a replacement.

Anonymous · April 12, 2018

Serial Number 598237 was reported as accurate.

Wayne56 2 · March 10, 2018

Serial Number 600551 was reported as accurate.

Anonymous · January 29, 2018

Serial Number 596481 was reported as accurate.

Anonymous · January 25, 2018

Serial Number 597664 was reported as accurate.

Anonymous · December 13, 2017

Serial Number 599910 was reported as accurate.

Anonymous · December 3, 2017

Serial Number 595276 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · November 29, 2017

Serial Number 594432 was reported as accurate.

Anonymous · November 19, 2017

Serial Number 595720 was reported as accurate.

Gimparoo Supporter 703 · November 17, 2017

Serial Number 599445 was reported as accurate.

Anonymous · October 27, 2017

Serial Number 594432 was reported as accurate.

Anonymous · October 1, 2017

Serial Number 599007 was reported as accurate.

Anonymous · September 17, 2017

Serial Number 599738 was reported as accurate.

Anonymous · August 18, 2017

Serial Number 597075 was reported as accurate.

Anonymous · August 4, 2017

Serial Number 600014 was reported as accurate.

Anonymous · July 28, 2017

Serial Number 598221 was reported as accurate.

Anonymous · March 20, 2017

Serial Number 599576 was reported as accurate.

Anonymous · March 2, 2017

Serial Number 598216 was reported as accurate.

Anonymous · January 9, 2017

Serial Number 597507 was reported as accurate.

Anonymous · January 1, 2017

Serial Number 594245 was reported as accurate.

oduffy42 1 · December 28, 2016

Serial Number 597127 was reported as accurate.

Anonymous · December 28, 2016

Serial Number 597127 was reported as accurate.

Dollarwatchman 6 · September 22, 2016

Serial Number 597722 was reported as accurate.

Anonymous · August 8, 2016

Serial Number 599199 was reported as accurate.

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

Mydogs12345 4 · May 6, 2016

Serial Number 595740 was reported as accurate.

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

Anonymous · April 26, 2016

Serial Number 596734 was reported as accurate.

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

moldess 22 · April 15, 2016

Serial Number 597206 was reported as accurate.

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

Anonymous · January 8, 2016

Serial Number 594100 was reported as accurate.

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

Anonymous · January 2, 2016

Serial Number 594217 was reported as accurate.

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

Anonymous · December 12, 2015

Serial Number 600287 was reported as accurate.

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

Gasperoff 727 · November 22, 2015

Serial Number 598661 was reported as accurate.

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

Mydogs12345 4 · November 14, 2015

Serial Number 595740 was reported as accurate.

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

Anonymous · November 9, 2015

Serial Number 600645 was reported as accurate.

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

jhkunkel 40 · November 8, 2015

Serial Number 598661 was reported as accurate.

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

Anonymous · October 24, 2015

Serial Number 598431 was reported as accurate.

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

Anonymous · October 21, 2015

Serial Number 600471 was reported as accurate.

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

Anonymous · September 13, 2015

Serial Number 600864 was reported as accurate.

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

Anonymous · September 12, 2015

Serial Number 597392 was reported as accurate.

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

Anonymous · August 26, 2015

Serial Number 597015 was reported as accurate.

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

Anonymous · June 9, 2015

Serial Number 597899 was reported as accurate.

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

Anonymous · May 30, 2015

Serial Number 597202 was reported as accurate.

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

timerestored 278 · February 9, 2015

Serial Number 599949 was reported as accurate.

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

Anonymous · February 1, 2015

Serial Number 599621 was reported as accurate.

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

Anonymous · November 12, 2014

Serial Number 594908 was reported as accurate.

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

Anonymous · August 27, 2014

Serial Number 595768 was reported as accurate.

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

Anonymous · August 11, 2014

Serial Number 600788 was reported as accurate.

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

Anonymous · July 27, 2014

Serial Number 597010 was reported as accurate.

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

Anonymous · July 19, 2014

Serial Number 600262 was reported as accurate.

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

Anonymous · June 23, 2014

Serial Number 595124 was reported as accurate.

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

Anonymous · June 15, 2014

Serial Number 598075 was reported as accurate.

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

Anonymous · May 11, 2014

Serial Number 595768 was reported as accurate.

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

Anonymous · October 14, 2013

Serial Number 597225 was reported as accurate.

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

Timeswept2 92 · September 30, 2013

Serial Number 595668 was reported as accurate.

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

Timeswept2 92 · September 23, 2013

Serial Number 595668 was reported as accurate.

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

Anonymous · September 17, 2013

Serial Number 598197 was reported as accurate.

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

Anonymous · May 20, 2013

Serial Number 596047 was reported as accurate.

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

Anonymous · April 17, 2013

Serial Number 598569 was reported as accurate.

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

Anonymous · April 7, 2013

Serial Number 597828 was reported as accurate.

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

Anonymous · March 23, 2013

Serial Number 595174 was reported as accurate.

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

Anonymous · March 15, 2013

Serial Number 595801 was reported as accurate.

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

Anonymous · February 14, 2013

Serial Number 598569 was reported as accurate.

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

Anonymous · December 28, 2012

Serial Number 598672 was reported as accurate.

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

Anonymous · November 27, 2012

Serial Number 598811 was reported as accurate.

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

Anonymous · May 3, 2012

Serial Number 600608 was reported as accurate.

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