Pocket Watch Database

From the American Horology Archive:
Hamilton Grade 990 Pocket Watch

Hamilton Watch Co.

Grade: 990

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 833033
Grade: 990
Model: 1
Estimated Production Year: 1911
Run Quantity: 1,000
Total Production: 12,599
Size: 16s
Jewels: 21j
Jewel Material: Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: 3/4 Plate
Double Roller: Yes
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
Railroad Grade: Yes
Dial Feet Locations: 7.6, 21.8, 38.0, 50.5
Hamilton 16s Dial Feet Research
Data Research: 1953 Hamilton Serial List
Case: Various
Registry Population: 17 (1.70%)
Database Version: v49.432

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 833033 #33 Collection March 06, 2022
2 833230 #230 Marketplace September 24, 2022
3 833330 #330 Marketplace April 18, 2013
4 833366 #366 Marketplace October 05, 2015
5 833418 #418 Marketplace November 03, 2013
6 833419 #419 Collection September 10, 2014
7 833449 #449 Marketplace March 15, 2020
8 833626 #626 Inferred
9 833728 #728 Marketplace March 18, 2015
10 833815 #815 Inferred
11 833822 #822 Collection April 21, 2018
12 833847 #847 Marketplace August 20, 2018
13 833900 #900 Collection May 12, 2020
14 833908 #908 Marketplace June 13, 2014
15 833914 #914 Marketplace July 03, 2019
16 833974 #974 Marketplace May 24, 2018
17 833997 #997 Marketplace December 04, 2012
Standard Deviation of Known Examples: 296.83 (Expected: 288.82, Δ8.01/0.80%)

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

833001
Verification Serial Map
834000

Anonymous · June 6, 2021

Serial Number 833429 was reported as accurate.

Anonymous · December 18, 2020

Serial Number 833850 was reported as accurate.

Anonymous · October 4, 2020

Serial Number 833471 was reported as accurate.

Meandean328 1 · January 7, 2020

Serial Number 833142 was reported as accurate.

Anonymous · August 9, 2019

Serial Number 833543 was reported as accurate.

Anonymous · July 27, 2019

Serial Number 833330 was reported as accurate.

Anonymous · April 28, 2019

Serial Number 833770 was reported as accurate.

Anonymous · November 30, 2018

Serial Number 833257 was reported as accurate.

Anonymous · July 9, 2018

Serial Number 833553 was reported as accurate.

Anonymous · June 10, 2018

Serial Number 833974 was reported as accurate.

Anonymous · November 5, 2017

Serial Number 833686 was reported as accurate.

Anonymous · August 14, 2017

Serial Number 833312 was reported as accurate.

MichaelB 150 · March 4, 2017

Serial Number 833861 was reported as inaccurate.

Note: Mvmt is clearly marked double roller
Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · December 22, 2016

Serial Number 833966 was reported as accurate.

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

Anonymous · December 10, 2016

Serial Number 833966 was reported as accurate.

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

Anonymous · October 18, 2016

Serial Number 833281 was reported as accurate.

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

Anonymous · August 6, 2016

Serial Number 833966 was reported as accurate.

Anonymous · June 10, 2016

Serial Number 833587 was reported as accurate.

Anonymous · July 7, 2015

Serial Number 833929 was reported as accurate.

Anonymous · May 4, 2015

Serial Number 833543 was reported as accurate.

Gasperoff 727 · March 18, 2015

Serial Number 833728 was reported as accurate.

ron1920 3 · January 23, 2014

Serial Number 833419 was reported as accurate.

Anonymous · September 15, 2013

Serial Number 833505 was reported as accurate.

PawPaw 13 · August 9, 2013

Serial Number 833798 was reported as accurate.

Anonymous · July 15, 2012

Serial Number 833052 was reported as inaccurate.

Note: all data correct, additionally, the barrel bridge
states/inscribes "double roller"
Changes since this report was submitted:
Double Roller changed from No to Yes
Plate changed from Unknown to 3/4
Hamilton Grade 990 Pocket Watch