Hamilton Pocket Watch: Serial Number 1643861 (Grade 992)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/hamilton/1643861

Access Date: March 27, 2023

From the American Horology Archive:

Hamilton Watch Co.

Grade: 992

Manufacturer:	Hamilton
Manufacturer Location:	Lancaster, Pennsylvania
Movement Serial Number:	1643861
Grade:	992
Model:	2
Estimated Production Year:	1923
Run Quantity:	1,000
Grade/Model Total Production:	447,200
Size:	16s
Jewels:	21j
Jewel Material:	Ruby & Sapphire
Jewel Setting:	Gold Settings (Screw-Set)
Movement Configuration:	Openface
Movement Finish:	Nickel
Finish Pattern:	2nd Pattern (bar)
Movement Setting:	Lever
Plate:	3/4 Plate
Double Roller:	Yes
Barrel:	Going
Center Wheel Material:	Gold
Regulator:	Reed
Hairspring:	Breguet
Pallet Jewel Material:	Sapphire
Standard Dial Type:	Double-Sunk
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Adjustment Tolerance:	DUvDD: +/- 6 sec.; 5Pv: +/- 10 sec.; Total Average: +3-6 sec. per day; Temperature: +/- 6 Seconds
Railroad Grade:	Yes
Dial Feet Locations:	22.3, 38.0, 57.1 Hamilton 16s Dial Feet Research
Data Research:	1953 Hamilton Serial List
Case:	Various
Database Version:	v50.358
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	1,299.66
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	590.77
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	4.137%
Registry Population:	12 (1.20%)

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Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
1		1643122	#122	Marketplace	June 30, 2019
2		1643157	#157	Marketplace	February 23, 2013
3		1643162	#162	Marketplace	August 19, 2016
4		1643174	#174	Inferred
5		1643195	#195	Marketplace	January 11, 2020
6		1643248	#248	Marketplace	February 14, 2019
7		1643324	#324	Marketplace	November 22, 2020
8		1643583	#583	Marketplace	April 26, 2015
9		1643676	#676	Marketplace	November 03, 2014
10		1643793	#793	Collection	March 28, 2015
11	Image Credit: RMRUDE	1643861	#861	Collection	March 25, 2018
12		1643864	#864	Marketplace	June 07, 2016
Standard Deviation of Known Examples: 300.93 (Expected: 288.82, Δ12.11/1.21%)

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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.

Anonymous · January 21, 2021

Serial Number 1643212 was reported as accurate.

Anonymous · May 15, 2020

Serial Number 1643317 was reported as inaccurate.

Note: I am no expert but the pictures you have look
different than mine. I will be more than happy to
helpsake your database more thorough let me know
what you need Dayton Rogers, tupelos 144 believ
*****@gmail.com

Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.