Pocket Watch Database


From the American Horology Archive:
Hamilton Grade 990 Pocket Watch

Hamilton Watch Co.

Grade: 990

Manufacturer: Hamilton Question Mark
Manufacturer Location: Lancaster, Pennsylvania Question Mark
Movement Serial Number: 330427 Question Mark
Grade: 990 Question Mark
Model: 1 Question Mark
Estimated Production Year: 1905 Question Mark
Run Quantity: 400 Question Mark
Grade/Model Run: 6 of 39 Question Mark
Grade/Model Total Production: 12,599 Question Mark
Size: 16s Question Mark
Jewels: 21j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Gold Settings (Screw-Set) Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: 3/4 Plate Question Mark
Barrel: Going Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire Question Mark
Standard Dial Type: Double-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Dial Feet Locations: 7.6, 21.8, 38.0, 50.5
Hamilton 16s Dial Feet Research
Question Mark
Case: Various Question Mark
Run ID: 736.990G6.16S288.161M256.O391.L454.21J158 Question Mark
Data Research: 1953 Hamilton Serial List
Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
37.93 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
16.64 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.118% Question Mark
Registry Population:
Scoped for This Run Only
11 (2.75%) Question Mark

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

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.


cjbrem Supporter 967 · August 5, 2023

Serial Number 330443 was reported as accurate.

Anonymous · February 22, 2022

Serial Number 330258 was reported as accurate.

Anonymous · January 28, 2021

Serial Number 330185 was reported as accurate.

Anonymous · November 28, 2020

Serial Number 330366 was reported as accurate.

Anonymous · October 1, 2020

Serial Number 330303 was reported as accurate.

Mobilaero Top Contributor Supporter 307 · August 24, 2018

Serial Number 330401 was reported as accurate.

Gimparoo Supporter 703 · May 26, 2018

Serial Number 330260 was reported as accurate.

Anonymous · August 25, 2016

Serial Number 330161 was reported as accurate.

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

Anonymous · April 25, 2016

Serial Number 330407 was reported as accurate.

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

Anonymous · November 5, 2014

Serial Number 330183 was reported as accurate.

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

Anonymous · August 17, 2014

Serial Number 330202 was reported as accurate.

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

Anonymous · November 14, 2013

Serial Number 330415 was reported as accurate.

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

Anonymous · August 2, 2013

Serial Number 330354 was reported as accurate.

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

Anonymous · July 26, 2013

Serial Number 330354 was reported as accurate.

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

Anonymous · December 6, 2012

Serial Number 330161 was reported as accurate.

Anonymous · December 6, 2012

Serial Number 330161 was reported as accurate.

Anonymous · December 4, 2012

Serial Number 330161 was reported as accurate.

Hamilton Grade 990 Pocket Watch