Pocket Watch Database


From the American Horology Archive:
Hamilton Grade 900 Pocket Watch
Hamilton Grade 900 Pocket Watch

Hamilton Watch Co.

Grade: 900

Only Sold Cased by Hamilton

Manufacturer: Hamilton Question Mark
Manufacturer Location: Lancaster, Pennsylvania Question Mark
Movement Serial Number: 1830488 Question Mark
Grade: 900 Question Mark
Model: 1 Question Mark
Estimated Production Year: 1918 Question Mark
Run Quantity: 1,000 Question Mark
Grade/Model Run: 5 of 15 Question Mark
Grade/Model Total Production: 24,700 Question Mark
Size: 12s Question Mark
Jewels: 19j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Raised Gold Settings (Screw-Set) Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Inlay Color: Black Question Mark
Movement Setting: Pendant Question Mark
Plate: Bridge Plate Question Mark
Barrel: Patent Motor Question Mark
Train Material: Gold Question Mark
Center Wheel Material: Gold Question Mark
Regulator: Micrometer Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire 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: No Question Mark
Dial Feet Locations: 10.5, 38.5, 56.0 Question Mark
Movement Markings: Hamilton
Lancaster, Pa.
19 Jewels
Adjusted 5 Positions
Safety Pinion
Case: Various Question Mark
Run ID: 2082.900G5.12S26.121M26.O1485.P572.19J62 Question Mark
Data Research: 1953 Hamilton Serial List
Question Mark
Database Version: v52.531 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
74.36 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
32.63 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.232% Question Mark
Registry Population:
Scoped for This Run Only
7 (0.70%) Question Mark
$ Estimated Value (12 Month Change): -6.47% Analyzing 121 Sales Question Mark
Research Note: Pillar Plate Diameter: 1.630"

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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.


23Greenwich Supporter 256 · March 23, 2024

Serial Number 1830170 was reported as accurate.

Anonymous · March 21, 2024

Serial Number 1830283 was reported as accurate.

Anonymous · March 21, 2024

Serial Number 1830283 was reported as accurate.

Anonymous · October 5, 2022

Serial Number 1830283 was reported as accurate.

Anonymous · May 2, 2022

Serial Number 1830876 was reported as accurate.

Anonymous · May 30, 2021

Serial Number 1830283 was reported as accurate.

Anonymous · May 29, 2021

Serial Number 1830107 was reported as accurate.

Anonymous · June 6, 2020

Serial Number 1830312 was reported as accurate.

2mnyboxers Supporter 408 · May 12, 2020

Serial Number 1830765 was reported as accurate.

Anonymous · May 4, 2018

Serial Number 1830970 was reported as accurate.

Anonymous · March 5, 2018

Serial Number 1830637 was reported as accurate.

Anonymous · April 22, 2015

Serial Number 1830283 was reported as accurate.

Anonymous · April 22, 2015

Serial Number 1830283 was reported as accurate.

CPRFan 4 · February 1, 2015

Serial Number 1830922 was reported as accurate.

CPRFan 4 · January 31, 2015

Serial Number 1830922 was reported as accurate.

Anonymous · October 24, 2014

Serial Number 1830326 was reported as accurate.

Gimparoo Supporter 703 · January 12, 2014

Serial Number 1830784 was reported as accurate.

millpill 1 · November 3, 2013

Serial Number 1830424 was reported as accurate.

Anonymous · February 12, 2013

Serial Number 1830901 was reported as accurate.

Anonymous · January 26, 2013

Serial Number 1830629 was reported as accurate.

Anonymous · January 14, 2013

Serial Number 1830629 was reported as accurate.

Anonymous · April 3, 2012

Serial Number 1830985 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from Unknown to Bridge
Hamilton Grade 900 Pocket Watch
Hamilton Grade 900 Pocket Watch