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: 1811067
Grade: 900
Model: 1
Estimated Production Year: 1916
Run Quantity: 2,000
Grade/Model Run: 4 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: 2072.900G4.12S16.121M16.O1475.P562.19J61
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
73.95
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: 13 (0.65%)
$ Estimated Value (12 Month Change): -19.42% Analyzing 121 Sales
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 · May 6, 2022

Serial Number 1812373 was reported as accurate.

Anonymous · December 28, 2020

Serial Number 1812658 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · October 11, 2019

Serial Number 1811412 was reported as accurate.

rjbeck 150 · September 21, 2019

Serial Number 1811412 was reported as accurate.

onradcl 1 · May 1, 2019

Serial Number 1811973 was reported as accurate.

Anonymous · August 24, 2018

Serial Number 1812611 was reported as accurate.

Anonymous · July 30, 2018

Serial Number 1812151 was reported as accurate.

Anonymous · November 14, 2016

Serial Number 1812559 was reported as accurate.

Anonymous · January 5, 2016

Serial Number 1812979 was reported as accurate.

catman032076 101 · December 24, 2015

Serial Number 1812664 was reported as accurate.

Anonymous · October 9, 2015

Serial Number 1811139 was reported as accurate.

Anonymous · September 6, 2015

Serial Number 1811685 was reported as accurate.

Anonymous · May 24, 2015

Serial Number 1811629 was reported as accurate.

Anonymous · September 30, 2014

Serial Number 1812863 was reported as accurate.

Anonymous · August 14, 2014

Serial Number 1812863 was reported as accurate.

Anonymous · August 8, 2014

Serial Number 1811629 was reported as accurate.

Anonymous · March 3, 2014

Serial Number 1812772 was reported as accurate.

Anonymous · July 2, 2013

Serial Number 1812231 was reported as inaccurate.

Note: 17 j not 19. As far as I can tell that is all.
Changes since this report was submitted:
Plate changed from Unknown to Bridge

Anonymous · July 2, 2013

Serial Number 1812863 was reported as accurate.

Anonymous · June 7, 2013

Serial Number 1812405 was reported as accurate.

Anonymous · June 6, 2013

Serial Number 1812863 was reported as accurate.

Bluejay 179 · June 5, 2013

Serial Number 1812405 was reported as inaccurate.

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

Anonymous · May 25, 2013

Serial Number 1812503 was reported as inaccurate.

Note: Size Is 14
Changes since this report was submitted:
Plate changed from Unknown to Bridge

Anonymous · March 22, 2013

Serial Number 1812863 was reported as accurate.

Anonymous · January 9, 2013

Serial Number 1812763 was reported as accurate.

Anonymous · October 21, 2012

Serial Number 1812929 was reported as inaccurate.

Note: Grade 900 had a Motor Barrel on all movements that
I have seen.
Changes since this report was submitted:
Plate changed from Unknown to Bridge
Hamilton Grade 900 Pocket Watch
Hamilton Grade 900 Pocket Watch