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: 651028
Grade: 940
Model: 1
Estimated Production Year: 1910
Run Quantity: 1,000
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
Registry Population: 16 (1.60%)
Database Version: v49.391
Research Note: #651415: Features Custom Damakeening Pattern.

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 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 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 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%)

Help Us Help Others By Improving the Database:

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Data Verification Reports

651001
Verification Serial Map
652000

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