Pocket Watch Database

From the American Horology Archive:
Ball - Hamilton Grade 999A Pocket Watch

Ball - Hamilton

Grade: 999A

Manufacturer: Ball - Hamilton
Movement Serial Number: 669513
Grade: 999A
Model: 1
Estimated Production Year: 1911
Run Quantity: 500
Grade/Model Run: 25 of 25
Grade/Model Total Production: 14,000
Size: 18s
Jewels: 21j
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: “Sun-burst” Damascening
Movement Setting: Lever
Plate: Full Plate
Double Roller: Yes
Regulator: Ball
Adjusted: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Railroad Grade: Yes
Movement Markings: Official RR Standard or Brotherhood Markings
Case: Various
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
41.91
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
318.43
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
12.136%
Registry Population: 1 (0.20%)
Research Note: Hamilton Hairspring Stud

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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.


watchcar Supporter 1 · September 22, 2020

Serial Number 669688 was reported as accurate.

Anonymous · August 16, 2020

Serial Number 669686 was reported as accurate.

Anonymous · January 21, 2020

Serial Number 669659 was reported as accurate.

Anonymous · March 30, 2018

Serial Number 669513 was reported as accurate.

Anonymous · February 10, 2018

Serial Number 669916 was reported as accurate.

Anonymous · January 9, 2018

Serial Number 669550 was reported as accurate.

Anonymous · December 15, 2017

Serial Number 669930 was reported as accurate.

Anonymous · September 8, 2016

Serial Number 669550 was reported as accurate.

Anonymous · January 17, 2016

Serial Number 669586 was reported as accurate.

Anonymous · March 28, 2015

Serial Number 669985 was reported as accurate.

Anonymous · October 25, 2014

Serial Number 669994 was reported as accurate.

Anonymous · March 27, 2014

Serial Number 669782 was reported as accurate.

Ball - Hamilton Grade 999A Pocket Watch