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: 938431
Grade: 940
Model: 1
Estimated Production Year: 1912
Run Quantity: 2,000
Grade/Model 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 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
Registry Population: 27 (1.35%)
Database Version: v49.752

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 937136 #136 Marketplace June 20, 2019
2 937237 #237 Marketplace January 30, 2018
3 937305 #305 Marketplace September 08, 2014
4 937312 #312 Inferred
5
Image Credit: giddykippa
937567 #567 Collection August 23, 2021
6 937582 #582 Marketplace October 08, 2019
7
Image Credit: DEzzyD
937687 #687 Collection January 12, 2022
8 937777 #777 Inferred
9 937843 #843 Marketplace April 03, 2022
10 937900 #900 Marketplace August 01, 2018
11 937926 #926 Marketplace November 13, 2020
12 937940 #940 Marketplace January 03, 2014
13 937986 #986 Marketplace March 19, 2013
14 938005 #1005 Marketplace October 11, 2020
15 938158 #1158 Collection October 08, 2017
16
Image Credit: stevekrz
938201 #1201 Collection December 03, 2020
17 938313 #1313 Marketplace August 15, 2015
18
Image Credit: Barbecuebrewer
938431 #1431 Collection March 20, 2021
19 938435 #1435 Collection August 16, 2015
20 938545 #1545 Marketplace April 11, 2014
21 938651 #1651 Marketplace June 18, 2017
22 938653 #1653 Marketplace December 16, 2012
23 938729 #1729 Marketplace April 17, 2015
24
Image Credit: tsullivan
938783 #1783 Collection April 26, 2016
25 938872 #1872 Marketplace November 01, 2013
26 938901 #1901 Marketplace April 21, 2014
27 938905 #1905 Marketplace January 02, 2018
Standard Deviation of Known Examples: 546.81 (Expected: 577.49, Δ30.69/1.53%)

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Verification Reports for this Run

The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.


Anonymous · July 31, 2022

Serial Number 938619 was reported as accurate.

giddykippa 233 · August 23, 2021

Serial Number 937567 was reported as accurate.

stevekrz 26 · December 3, 2020

Serial Number 938201 was reported as accurate.

Anonymous · October 26, 2020

Serial Number 937072 was reported as accurate.

Anonymous · July 10, 2020

Serial Number 938619 was reported as accurate.

Anonymous · February 21, 2020

Serial Number 938906 was reported as accurate.

Anonymous · October 15, 2019

Serial Number 937662 was reported as accurate.

Anonymous · May 15, 2019

Serial Number 938707 was reported as accurate.

Anonymous · August 1, 2018

Serial Number 937122 was reported as accurate.

Anonymous · June 27, 2018

Serial Number 937900 was reported as accurate.

LostDutchman Supporter 44 · June 21, 2018

Serial Number 937900 was reported as accurate.

Anonymous · February 16, 2018

Serial Number 938123 was reported as accurate.

Anonymous · September 24, 2017

Serial Number 938624 was reported as accurate.

dfchong 837 · August 30, 2017

Serial Number 938863 was reported as accurate.

dfchong 837 · August 29, 2017

Serial Number 938863 was reported as accurate.

Gimparoo Supporter 703 · August 23, 2017

Serial Number 938986 was reported as accurate.

LostDutchman Supporter 44 · November 15, 2016

Serial Number 937900 was reported as accurate.

Anonymous · April 5, 2016

Serial Number 938783 was reported as accurate.

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

Anonymous · July 12, 2015

Serial Number 938705 was reported as accurate.

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

Anonymous · June 28, 2014

Serial Number 937244 was reported as accurate.

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

Anonymous · June 10, 2014

Serial Number 938781 was reported as accurate.

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

Anonymous · January 4, 2014

Serial Number 937940 was reported as accurate.

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

Anonymous · January 3, 2014

Serial Number 937940 was reported as accurate.

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

Anonymous · October 30, 2012

Serial Number 938465 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