Pocket Watch Database


From the American Horology Archive:

Hamilton Watch Co.

Grade: 991

Manufacturer: Hamilton Question Mark
Manufacturer Location: Lancaster, Pennsylvania Question Mark
Movement Serial Number: 375290 Question Mark
Grade: 991 Question Mark
Model: 1 Question Mark
Estimated Production Year: 1907 Question Mark
Run Quantity: 400 Question Mark
Grade/Model Run: 4 of 9 Question Mark
Grade/Model Total Production: 2,520 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: Hunting 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: 845.991G4.16S396.161M362.H391.L488.21J201 Question Mark
Data Research: 1953 Hamilton Serial List
Question Mark
Database Version: v52.450 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
7.58 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
3.33 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.024% Question Mark
Registry Population:
Scoped for This Run Only
6 (1.50%) Question Mark

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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 · May 13, 2021

Serial Number 375427 was reported as accurate.

Anonymous · November 29, 2020

Serial Number 375397 was reported as accurate.

Anonymous · March 26, 2014

Serial Number 375444 was reported as accurate.

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

Anonymous · June 17, 2013

Serial Number 375333 was reported as accurate.

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

Anonymous · May 10, 2013

Serial Number 375290 was reported as inaccurate.

Note: 3/4 plate
Changes since this report was submitted:
Factory Model changed from 2 to 1
Plate changed from Unknown to 3/4

Anonymous · May 8, 2013

Serial Number 375290 was reported as accurate.

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

Anonymous · May 8, 2013

Serial Number 375290 was reported as inaccurate.

Note: 3/4 plate
Changes since this report was submitted:
Factory Model changed from 2 to 1
Plate changed from Unknown to 3/4

Anonymous · April 2, 2013

Serial Number 375290 was reported as accurate.

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

Anonymous · March 4, 2013

Serial Number 375333 was reported as accurate.

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

Anonymous · February 28, 2013

Serial Number 375333 was reported as accurate.

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