Hamilton Pocket Watch: Serial Number 938431 (Grade 940)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/hamilton/938431

Access Date: February 03, 2023

From the American Horology Archive:

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

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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.