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: 663187
Grade: 940
Model: 1
Estimated Production Year: 1910
Run Quantity: 2,000
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: 42 (2.10%)
Database Version: v49.712
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
Image Credit: Dave895
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
Image Credit: Yellowtail420
662374 #374 Collection February 28, 2022
9 662392 #392 Collection October 16, 2014
10 662486 #486 Inferred
11
Image Credit: tsullivan
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
Image Credit: Yellowtail420
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
Image Credit: Huggs3
663098 #1098 Collection June 03, 2022
30 663132 #1132 Marketplace August 28, 2013
31
Image Credit: nightstalker638
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
Image Credit: sdyeti
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%)

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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.


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 122 · November 15, 2021

Serial Number 663093 was reported as accurate.

nightstalker638 44 · October 31, 2021

Serial Number 663187 was reported as accurate.

Dave895 Supporter 74 · 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