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
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 1830488
Grade: 900
Model: 1
Estimated Production Year: 1918
Run Quantity: 1,000
Grade/Model Run: 5 of 15
Grade/Model Total Production: 24,700
Size: 12s
Jewels: 19j
Jewel Material: Ruby & Sapphire
Jewel Setting: Raised Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Inlay Color: Black
Movement Setting: Pendant
Plate: Bridge Plate
Barrel: Patent Motor
Train Material: Gold
Center Wheel Material: Gold
Regulator: Micrometer
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: No
Dial Feet Locations: 10.5, 38.5, 56.0
Movement Markings: Hamilton
Lancaster, Pa.
19 Jewels
Adjusted 5 Positions
Safety Pinion
Data Research: 1953 Hamilton Serial List
Case: Various
Run ID: 2082.900G5.12S26.121M26.O1485.P572.19J62
Database Version: v52.245
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
74.36
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
32.63
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.232%
Registry Population: 7 (0.70%)
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 189 · 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 399 · 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