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: 1913359
Grade: 900
Model: 1
Estimated Production Year: 1923
Run Quantity: 1,000
Grade/Model Run: 13 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
Double Roller: Yes
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: 2138.900G13.12S82.121M82.O1541.P628.19J70
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: 16 (1.60%)
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.


billreid 141 · June 23, 2021

Serial Number 1913679 was reported as accurate.

Anonymous · August 21, 2018

Serial Number 1913330 was reported as accurate.

jayjiang0830 47 · November 21, 2017

Serial Number 1913105 was reported as accurate.

aconner 62 · March 14, 2016

Serial Number 1913288 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · February 20, 2016

Serial Number 1913773 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · December 25, 2014

Serial Number 1913771 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Double Roller changed from No to Yes

crazyyog 1 · November 28, 2014

Serial Number 1913017 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · November 28, 2014

Serial Number 1913017 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes

Anonymous · July 29, 2014

Serial Number 1913811 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from No to Yes
Hamilton Grade 900 Pocket Watch
Hamilton Grade 900 Pocket Watch