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: 651780
Grade: 940
Model: 1
Estimated Production Year: 1910
Run Quantity: 1,000
Grade/Model 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
Registry Population: 16 (1.60%)
Database Version: v49.712
Research Note: #651415: Features Custom Damakeening Pattern.

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1
Image Credit: Mogman50
651028 #28 Collection November 30, 2018
2 651042 #42 Collection February 01, 2018
3 651088 #88 Marketplace April 08, 2013
4 651179 #179 Marketplace July 14, 2022
5 651194 #194 Marketplace December 06, 2019
6 651315 #315 Inferred
7 651443 #443 Inferred
8
Image Credit: rodlittle
651447 #447 Collection July 30, 2017
9 651464 #464 Marketplace October 18, 2022
10 651484 #484 Inferred
11 651546 #546 Collection December 08, 2021
12 651555 #555 Collection June 22, 2013
13 651584 #584 Collection October 07, 2015
14 651658 #658 Collection September 16, 2020
15
Image Credit: goldslinger
651780 #780 Collection February 25, 2022
16 651837 #837 Marketplace November 01, 2017
Standard Deviation of Known Examples: 252.32 (Expected: 288.82, Δ36.50/3.65%)

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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.


Chronified Supporter 193 · February 23, 2021

Serial Number 651262 was reported as accurate.

Chronified Supporter 193 · February 23, 2021

Serial Number 651443 was reported as accurate.

Anonymous · January 20, 2020

Serial Number 651819 was reported as accurate.

Anonymous · October 2, 2018

Serial Number 651700 was reported as accurate.

Anonymous · July 30, 2018

Serial Number 651352 was reported as accurate.

Anonymous · May 19, 2017

Serial Number 651603 was reported as accurate.

Anonymous · January 16, 2017

Serial Number 651901 was reported as accurate.

Bernsiebs 6 · July 23, 2016

Serial Number 651736 was reported as accurate.

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

Anonymous · December 27, 2014

Serial Number 651940 was reported as accurate.

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

Anonymous · September 23, 2014

Serial Number 651158 was reported as accurate.

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

mavossen 3 · June 22, 2013

Serial Number 651555 was reported as accurate.

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

Anonymous · July 6, 2012

Serial Number 651154 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