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: 1782910
Grade: 900
Model: 1
Estimated Production Year: 1916
Run Quantity: 500
Grade/Model Run: 3 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: 2068.900G3.12S12.121M12.O1471.P558.19J60
Database Version: v52.235
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: 3 (0.60%)
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.


Anonymous · November 23, 2023

Serial Number 1782610 was reported as accurate.

Anonymous · July 3, 2022

Serial Number 1782908 was reported as accurate.

Anonymous · October 28, 2019

Serial Number 1782908 was reported as accurate.

WatchDee 19 · May 27, 2018

Serial Number 1782618 was reported as accurate.

Jvictor 15 · May 20, 2015

Serial Number 1782910 was reported as accurate.

Anonymous · January 10, 2015

Serial Number 1782641 was reported as accurate.

Anonymous · September 23, 2014

Serial Number 1782641 was reported as accurate.

clifski 1 · June 29, 2014

Serial Number 1782755 was reported as accurate.

Anonymous · July 16, 2013

Serial Number 1782910 was reported as inaccurate.

Note: movement is marked 900 not 910
Changes since this report was submitted:
Grade changed from 910 to 900
Jewels changed from 17j to 19j
Plate changed from 3/4 to Bridge
Hamilton Grade 900 Pocket Watch
Hamilton Grade 900 Pocket Watch