Pocket Watch Database

From the American Horology Archive:
Hamilton Grade 992 Pocket Watch
Hamilton Grade 992 Pocket Watch

Hamilton Watch Co.

Grade: 992

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 1635079
Grade: 992
Model: 2
Estimated Production Year: 1922
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
Registry Population: 13 (1.30%)
Database Version: v49.716

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1
Image Credit: DEzzyD
1635079 #79 Collection November 18, 2021
2 1635225 #225 Marketplace September 07, 2022
3 1635263 #263 Collection January 31, 2016
4 1635334 #334 Marketplace March 29, 2013
5
Image Credit: todix144
1635345 #345 Collection November 11, 2018
6 1635347 #347 Collection March 17, 2013
7 1635396 #396 Marketplace January 07, 2013
8 1635403 #403 Marketplace December 28, 2015
9 1635435 #435 Marketplace May 19, 2013
10 1635441 #441 Marketplace November 09, 2013
11 1635517 #517 Marketplace August 22, 2013
12 1635752 #752 Collection March 12, 2018
13 1635795 #795 Marketplace January 21, 2017
Standard Deviation of Known Examples: 195.33 (Expected: 288.82, Δ93.49/9.35%)

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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 · March 16, 2022

Serial Number 1635320 was reported as accurate.

Anonymous · April 24, 2021

Serial Number 1635402 was reported as accurate.

Anonymous · May 3, 2020

Serial Number 1635441 was reported as accurate.

Anonymous · September 24, 2019

Serial Number 1635232 was reported as accurate.

Anonymous · May 30, 2019

Serial Number 1635111 was reported as accurate.

Anonymous · January 12, 2019

Serial Number 1635591 was reported as accurate.

todix144 76 · November 11, 2018

Serial Number 1635345 was reported as accurate.

RonaldHall 1 · March 12, 2018

Serial Number 1635752 was reported as accurate.

Anonymous · September 25, 2017

Serial Number 1635990 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · July 1, 2017

Serial Number 1635704 was reported as accurate.

Anonymous · April 22, 2017

Serial Number 1635591 was reported as accurate.

Gasperoff 727 · August 23, 2015

Serial Number 1635334 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 1 to 2

Anonymous · October 24, 2012

Serial Number 1635021 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 18 to 2
Double Roller changed from No to Yes

Anonymous · October 19, 2012

Serial Number 1635731 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 18 to 2
Double Roller changed from No to Yes

Anonymous · September 6, 2012

Serial Number 1635415 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 18 to 2
Double Roller changed from No to Yes
Hamilton Grade 992 Pocket Watch
Hamilton Grade 992 Pocket Watch