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: 810183
Grade: 990
Model: 1
Estimated Production Year: 1911
Run Quantity: 300
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
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: 9 (3.00%)
Database Version: v49.432

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 810140 #140 Marketplace June 14, 2017
2 810158 #158 Collection February 14, 2016
3 810183 #183 Collection August 01, 2017
4 810185 #185 Marketplace April 10, 2015
5 810213 #213 Marketplace May 01, 2017
6 810245 #245 Collection April 30, 2014
7 810256 #256 Collection November 19, 2015
8 810257 #257 Marketplace March 16, 2017
9 810295 #295 Marketplace October 15, 2017
Standard Deviation of Known Examples: 51.90 (Expected: 86.75, Δ34.85/11.62%)

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

810001
Verification Serial Map
810300

dwmakos 8 · April 14, 2019

Serial Number 810222 was reported as inaccurate.

Note: The movement gears are all solid pink gold, It's
fully including winding gears are Damaskeened,
Gold Jewel Settings, Double roller
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

dwmakos 8 · April 14, 2019

Serial Number 810222 was reported as accurate.

Anonymous · April 12, 2019

Serial Number 810222 was reported as accurate.

Anonymous · February 8, 2019

Serial Number 810222 was reported as accurate.

dfchong 837 · October 10, 2017

Serial Number 810183 was reported as accurate.

Anonymous · October 8, 2017

Serial Number 810183 was reported as accurate.

dfchong 837 · October 3, 2017

Serial Number 810183 was reported as accurate.

Anonymous · December 19, 2015

Serial Number 810213 was reported as accurate.

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

Anonymous · November 19, 2015

Serial Number 810253 was reported as accurate.

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

Anonymous · September 10, 2015

Serial Number 810256 was reported as accurate.

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

Anonymous · September 12, 2013

Serial Number 810256 was reported as accurate.

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

Anonymous · August 6, 2013

Serial Number 810256 was reported as accurate.

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

Anonymous · April 8, 2013

Serial Number 810021 was reported as accurate.

Anonymous · April 8, 2013

Serial Number 810021 was reported as accurate.

Anonymous · April 8, 2013

Serial Number 810021 was reported as accurate.

Hamilton Grade 990 Pocket Watch