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: 662061
Grade: 940
Model: 1
Estimated Production Year: 1910
Run Quantity: 2,000
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: 42 (2.10%)
Database Version: v49.391
Research Note: #663058 Reported as Marked "For Special RR Service"

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 662015 #15 Marketplace May 24, 2017
2 662061 #61 Collection July 23, 2021
3 662145 #145 Marketplace December 10, 2013
4 662149 #149 Marketplace March 30, 2016
5 662179 #179 Marketplace November 13, 2014
6 662206 #206 Marketplace January 10, 2016
7 662351 #351 Marketplace February 12, 2019
8 662374 #374 Collection February 28, 2022
9 662392 #392 Collection October 16, 2014
10 662486 #486 Inferred
11 662528 #528 Collection April 30, 2016
12 662566 #566 Marketplace December 28, 2013
13 662617 #617 Marketplace July 28, 2019
14 662631 #631 Collection August 06, 2014
15 662634 #634 Collection March 08, 2022
16 662665 #665 Marketplace August 26, 2018
17 662681 #681 Marketplace October 21, 2013
18 662683 #683 Marketplace January 01, 2016
19 662686 #686 Collection February 28, 2022
20 662788 #788 Collection August 29, 2017
21 662800 #800 Collection May 22, 2022
22 662881 #881 Marketplace July 13, 2020
23 662898 #898 Marketplace May 01, 2022
24 663009 #1009 Marketplace December 03, 2021
25 663010 #1010 Marketplace March 18, 2013
26 663047 #1047 Inferred
27 663069 #1069 Marketplace October 01, 2014
28 663081 #1081 Marketplace March 18, 2016
29 663098 #1098 Collection June 03, 2022
30 663132 #1132 Marketplace August 28, 2013
31 663187 #1187 Collection June 28, 2017
32 663261 #1261 Marketplace November 30, 2019
33 663335 #1335 Marketplace August 27, 2018
34 663342 #1342 Marketplace March 10, 2019
35 663443 #1443 Marketplace January 28, 2021
36 663472 #1472 Inferred
37 663670 #1670 Collection January 04, 2018
38 663748 #1748 Marketplace September 13, 2020
39 663850 #1850 Collection July 31, 2014
40 663891 #1891 Marketplace June 13, 2019
41 663912 #1912 Collection September 02, 2014
42 663968 #1968 Marketplace March 30, 2014
Standard Deviation of Known Examples: 543.31 (Expected: 577.49, Δ34.19/1.71%)

Help Us Help Others By Improving the Database:

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Data Verification Reports

662001
Verification Serial Map
664000

mcneight 2 · May 22, 2022

Serial Number 662800 was reported as accurate.

Yellowtail420 Supporter 96 · March 1, 2022

Serial Number 662374 was reported as accurate.

Huggs3 Supporter 120 · November 15, 2021

Serial Number 663093 was reported as accurate.

nightstalker638 44 · October 31, 2021

Serial Number 663187 was reported as accurate.

Dave895 Supporter 73 · July 23, 2021

Serial Number 662061 was reported as accurate.

Anonymous · January 31, 2020

Serial Number 663256 was reported as accurate.

Anonymous · November 19, 2019

Serial Number 663004 was reported as accurate.

bubba70 543 · July 15, 2019

Serial Number 662351 was reported as accurate.

bubba70 543 · July 14, 2019

Serial Number 662351 was reported as accurate.

bubba70 543 · June 20, 2019

Serial Number 663891 was reported as accurate.

Anonymous · February 17, 2019

Serial Number 663747 was reported as accurate.

Anonymous · December 17, 2018

Serial Number 663595 was reported as accurate.

Anonymous · March 26, 2018

Serial Number 663528 was reported as accurate.

Anonymous · January 8, 2018

Serial Number 663027 was reported as accurate.

Anonymous · July 29, 2017

Serial Number 663341 was reported as accurate.

Anonymous · July 17, 2017

Serial Number 662520 was reported as accurate.

nightstalker638 44 · June 28, 2017

Serial Number 663187 was reported as accurate.

Anonymous · June 10, 2017

Serial Number 662520 was reported as accurate.

Anonymous · August 8, 2016

Serial Number 662045 was reported as accurate.

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

Anonymous · January 31, 2016

Serial Number 663571 was reported as accurate.

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

Anonymous · July 30, 2015

Serial Number 663058 was reported as inaccurate.

Note: plus two tone movement signed "for special RR
service"
Changes since this report was submitted:
Double Roller changed from No to Yes

Gasperoff 727 · April 16, 2015

Serial Number 662631 was reported as accurate.

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

rbaird54 9 · April 17, 2014

Serial Number 662681 was reported as accurate.

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

inherited 2 · April 9, 2014

Serial Number 663032 was reported as accurate.

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

Anonymous · August 30, 2013

Serial Number 663132 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